[jschwartzi]

I've noticed that in downtown Seattle, the GPS has some difficulties maintaining a tight fix on your location. Couple that with how close together some of the roads are and you may find yourself teleporting from one avenue to the other as you move toward your destination.

It works great in suburbia, as expected.

[saraid216]

It's been explained to me that tall buildings play merry havoc with the GPS, but I haven't been able to test that out at all.