diff --git a/.gitmodules b/.gitmodules
index 67d3592..5eb73b2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "testdata/hpi-testdata"]
 	path = testdata/hpi-testdata
 	url = https://github.com/karlicoss/hpi-testdata
+[submodule "testdata/track"]
+	path = testdata/track
+	url = https://github.com/tajtiattila/track
diff --git a/doc/example_config/my/config/__init__.py b/doc/example_config/my/config/__init__.py
index 8728016..4f7393a 100644
--- a/doc/example_config/my/config/__init__.py
+++ b/doc/example_config/my/config/__init__.py
@@ -29,3 +29,6 @@ class exercise:
 
 class bluemaestro:
     export_path: Paths = ''
+
+class google:
+    takeout_path: Paths = ''
diff --git a/my/location/__init__.py b/my/location/__init__.py
deleted file mode 120000
index bfea2b5..0000000
--- a/my/location/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-takeout.py
\ No newline at end of file
diff --git a/my/location/takeout.py b/my/location/google.py
similarity index 85%
rename from my/location/takeout.py
rename to my/location/google.py
index a32242a..cc8d3f3 100644
--- a/my/location/takeout.py
+++ b/my/location/google.py
@@ -4,14 +4,13 @@ Location data from Google Takeout
 
 import json
 from collections import deque
-from datetime import datetime
+from datetime import datetime, timezone
 from itertools import islice
 from pathlib import Path
+from subprocess import Popen, PIPE
 from typing import Any, Collection, Deque, Iterable, Iterator, List, NamedTuple, Optional, Sequence, IO, Tuple
 import re
 
-import pytz
-
 # pip3 install geopy
 import geopy # type: ignore
 import geopy.distance # type: ignore
@@ -22,6 +21,11 @@ from ..google.takeout.paths import get_last_takeout
 from ..kython import kompress
 
 
+ # otherwise uses ijson
+ # todo move to config??
+USE_GREP = False
+
+
 logger = LazyLogger(__name__)
 
 
@@ -57,18 +61,20 @@ def _iter_via_ijson(fo) -> Iterator[TsLatLon]:
         )
 
 
+# todo ugh. fragile, not sure, maybe should do some assert in advance?
 def _iter_via_grep(fo) -> Iterator[TsLatLon]:
     # grep version takes 5 seconds for 1M items (without processing)
-    x = [None, None, None]
+    x = [-1, -1, -1]
     for i, line in enumerate(fo):
         if i > 0 and i % 3 == 0:
-            yield tuple(x)
+            yield tuple(x) # type: ignore[misc]
         n = re.search(b': "?(-?\\d+)"?,?$', line) # meh. somewhat fragile...
+        assert n is not None
         j = i % 3
         x[j] = int(n.group(1).decode('ascii'))
     # make sure it's read what we expected
     assert (i + 1) % 3 == 0
-    yield tuple(x)
+    yield tuple(x) # type: ignore[misc]
 
 
 # todo could also use pool? not sure if that would really be faster...
@@ -102,7 +108,7 @@ def _iter_locations_fo(fit) -> Iterator[Location]:
             return None
 
     for tsMs, latE7, lonE7 in fit:
-        dt = datetime.fromtimestamp(tsMs / 1000, tz=pytz.utc)
+        dt = datetime.fromtimestamp(tsMs / 1000, tz=timezone.utc)
         total += 1
         if total % 10000 == 0:
             logger.info('processing item %d %s', total, dt)
@@ -150,31 +156,33 @@ def _iter_locations(path: Path, start=0, stop=None) -> Iterator[Location]:
         # todo CPath? although not sure if it can be iterative?
         ctx = kompress.open(path, _LOCATION_JSON)
 
-    # with ctx as fo:
-    #     fit = _iter_via_ijson(fo)
-    #     fit = islice(fit, start, stop)
-    #     yield from _iter_locations_fo(fit)
-  
-    unzip = f'unzip -p "{path}" "{_LOCATION_JSON}"'
-    extract = "grep -E '^    .(timestampMs|latitudeE7|longitudeE7)'"
-    from subprocess import Popen, PIPE
-    with Popen(f'{unzip} | {extract}', shell=True, stdout=PIPE) as p:
-        out = p.stdout; assert out is not None
-        fit = _iter_via_grep(out)
-        fit = islice(fit, start, stop)
-        yield from _iter_locations_fo(fit)
+    if USE_GREP:
+        unzip = f'unzip -p "{path}" "{_LOCATION_JSON}"'
+        extract = "grep -E '^    .(timestampMs|latitudeE7|longitudeE7)'"
+        with Popen(f'{unzip} | {extract}', shell=True, stdout=PIPE) as p:
+            out = p.stdout; assert out is not None
+            fit = _iter_via_grep(out)
+            fit = islice(fit, start, stop)
+            yield from _iter_locations_fo(fit)
+    else:
+        with ctx as fo:
+            # todo need to open as bytes
+            fit = _iter_via_ijson(fo)
+            fit = islice(fit, start, stop)
+            yield from _iter_locations_fo(fit)
     # todo wonder if old takeouts could contribute as well??
 
 
-def iter_locations(**kwargs) -> Iterator[Location]:
+def locations(**kwargs) -> Iterator[Location]:
     # TODO need to include older data
     last_takeout = get_last_takeout(path=_LOCATION_JSON)
 
     return _iter_locations(path=last_takeout, **kwargs)
 
 
+# todo deprecate?
 def get_locations(*args, **kwargs) -> Sequence[Location]:
-    return list(iter_locations(*args, **kwargs))
+    return list(locations(*args, **kwargs))
 
 
 class LocInterval(NamedTuple):
@@ -222,7 +230,7 @@ class Window:
 # todo cachew as well?
 # TODO maybe if tag is none, we just don't care?
 def get_groups(*args, **kwargs) -> List[LocInterval]:
-    all_locations = iter(iter_locations(*args, **kwargs))
+    all_locations = iter(locations(*args, **kwargs))
     locsi = Window(all_locations)
     i = 0
     groups: List[LocInterval] = []
@@ -269,13 +277,3 @@ def get_groups(*args, **kwargs) -> List[LocInterval]:
             pass
     dump_group()
     return groups
-
-
-# TODO not sure if necessary anymore...
-def update_cache():
-    # TODO perhaps set hash to null instead, that's a bit less intrusive
-    cp = cache_path()
-    if cp.exists():
-        cp.unlink()
-    for _ in iter_locations():
-        pass
diff --git a/testdata/track b/testdata/track
new file mode 160000
index 0000000..2e8a334
--- /dev/null
+++ b/testdata/track
@@ -0,0 +1 @@
+Subproject commit 2e8a334ca9cb4b04265b060025fb35bcfc53d6c1
diff --git a/tests/location.py b/tests/location.py
new file mode 100644
index 0000000..7671df8
--- /dev/null
+++ b/tests/location.py
@@ -0,0 +1,37 @@
+from pathlib import Path
+
+from more_itertools import one
+
+import pytest # type: ignore
+
+
+def test() -> None:
+    from my.location.google import locations
+    locs = list(locations())
+    assert len(locs) == 3810
+
+    last = locs[-1]
+    assert last.dt.strftime('%Y%m%d %H:%M:%S') == '20170802 13:01:56' # should be utc
+    # todo approx
+    assert last.lat == 46.5515350
+    assert last.lon == 16.4742742
+    # todo check altitude
+
+
+@pytest.fixture(autouse=True)
+def prepare(tmp_path: Path):
+    testdata = Path(__file__).absolute().parent.parent / 'testdata'
+    assert testdata.exists(), testdata
+
+    track = one(testdata.rglob('italy-slovenia-2017-07-29.json'))
+
+    # todo ugh. unnecessary zipping, but at the moment takeout provider doesn't support plain dirs
+    import zipfile
+    with zipfile.ZipFile(tmp_path / 'takeout.zip', 'w') as zf:
+        zf.writestr('Takeout/Location History/Location History.json', track.read_bytes())
+
+    from my.cfg import config
+    class user_config:
+        takeout_path = tmp_path
+    config.google = user_config # type: ignore
+    yield
diff --git a/tox.ini b/tox.ini
index 7a3dddb..3f26068 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,6 +13,10 @@ commands =
     # todo these are probably not necessary anymore?
     python3 -c 'from my.config import stub as config; print(config.key)'
     python3 -c 'import my.config; import my.config.repos' # shouldn't fail at least
+
+    # my.location.google deps
+    pip install geopy ijson
+
     python3 -m pytest                              \
         tests/core.py                              \
         tests/misc.py                              \
@@ -20,7 +24,8 @@ commands =
         tests/config.py::test_set_repo             \
         tests/config.py::test_environment_variable \
         tests/demo.py                              \
-        tests/bluemaestro.py
+        tests/bluemaestro.py                       \
+        tests/location.py
     # TODO add; once I figure out porg depdencency?? tests/config.py
     # TODO run demo.py? just make sure with_my is a bit cleverer?
     # TODO e.g. under CI, rely on installing
@@ -57,6 +62,7 @@ commands =
                     -p my.body.exercise.cardio        \
                     -p my.body.exercise.cross_trainer \
                     -p my.bluemaestro                 \
+                    -p my.location.google             \
                     --txt-report  .mypy-coverage      \
                     --html-report .mypy-coverage      \
                     {posargs}