I also agree with these 2 guys. I'm working on my Vendetta, trying to get the 62mph (100 km/h) with that thing. I'm running mamba 8000kv, 3 cell LiPo and a Quark Competition 80B ESC. That thing really flies! But it's SO DAMN HARD to control it! I always have to start really slow, or else it will spin, and if I go something like 40-50 mph and trying to go slower the car will spin most of the time

So again: Traction will be the biggest problem


EDIT: What's a gyro? (My english isnt very good)