Bike Map

This may exist or be a bad idea but: map and direction screens for bikes. They already have those things that tell you how fast you're going and what not. I think it could be pretty easy to get one of those navguides and just pump it full of all the best bike routes. That way you could know not only the right way to get somewhere, but the right way to get there without getting run over, or running into too many potholed street, &c.

I'm sure the tweaks you could make are really infinite to those things. If you wanted wifi in it, you could get current traffic and weather and some such. Obviously more important for the full on bike trek then for just a local joy ride. But still rad.

It could also list local repair shops, gas stations with free air. All that junk.

Just saying, bikers have needs too and they are different than the drivers.

Oh, oh and it could have a proximity warning for cars or something, like it could know that there are cars coming up specifically behind you. See, I'm totally useful.