Mines the 28mph one. Which is fine for where I am. Only a couple roads with a 35+mph speed limit on them in my town anyway.

I also bought it used off of some rich yuppie who had it sitting in his garage for years, with less than 200 miles on it. I really got lucky. My friend and I picked up 2 of them for $2700!

There is a firmware mod out there for them im thinking about getting that turns the 28mph ones into 55mph (theres like a 1 hp difference between the motors they used) first project is setting up a power inverter for it, though!