It's giving me some strangely detailed results in Las Vegas, even following US 95, but I've never been there in my life. Meanwhile, none of the time I've spent visiting the Bay Area is showing up. At home in Chicago, though, it all looks about right.

Quite curious.

[update]

After scrolling through the timeline, it appears that my most recent Bay Area trip coincides with the Las Vegas location data. What happens in SF stays in Vegas?

your phone has;)