road obstacles: neither tire width nor diameter matters!
 

26"x3"?:
http://youtube.com/watch?v=lnMC4XQb6l0

66"x43":
http://youtube.com/watch?v=BKADCiIaVBc


The engine and its control overrides everything else.

Very cool lets see it done with a folder.:)

You'll see, soon enough we'll all be whizzing over the subway turn styles on hyperfolding tikits (doesn't citibank offer some kind of contactless metrocard?). A split second faster fold is important when you need to get it done before you hit the ground!

Should be a big hit in Japan too where sometimes people run full speed into packed subway cars in order to build up enough momentum to squeeze themselves in. I mean, if you think about it you really don't need a smaller folder if you can just put more force into cramming the one you got, right? :p

Here's one with 20" wheels and no suspension that's nearly as impressive (and I understand suspension helps a lot):
http://youtube.com/watch?v=qS1Huw9ALTI

If my saddle were low enough that I could do that, the end of the seat post protruding below the frame would catch the obstacle. . .

http://i128.photobucket.com/albums/p.../Bunny-Hop.jpg