I just googled the route I take downtown, and it had me going on two VERY busy (and totally inappropriate) roads. The way I go isn't even on there and while it might be a couple miles longer, it's on residential streets with little to no traffic.
I think it's a great concept- and perhaps with a little input it will be even better. I mean- they can't know EVERY community in America. That's where we come in to suggest better routings.