Since we're working on North Carolina data...
When I compiled my mileage on I-40, after my most recent out of state trip, the browser shows me traveling along I-85, when I didn't.
My route is (was) for I-40, exit 283 west to exit 161(85). That shows up correctly, but it also shows me traveling I-85 from exit 161 to exit 165, which east of exit 163 (split with I-40) I didn't drive.
Not sure why it is adding mileage for me on I-85, but I have two miles too many.