Unfortunately the beta is only Portland, Oregon, right now. Can't wait for Orlando, I know it'll make Jess' life easier.
I don't know anything about Portland, and I'm sure most of you don't, so here's 2 random addresses just to show how it works.
Duration: 35 mins in transit
11 mins walking to/from your route.
Cost: $1.80 (vs. $3.03 driving!) details
Personally I think the cost thing is awesome.