Are you sure that you are designed for 13 meters per second? That's 40 feet per second or twice as fast as the fastest robots typically go.
Plugging your details into JVN's drive train calculator:
http://www.chiefdelphi.com/media/papers/2059
I assumed 2 CIM motors per side, 6 inch wheels, 1.3 coefficient of friction, and a single gear reduction of 10 and 35 (to get to 40 fps). This shows a total current draw of over 1000 amps. If all the right circuit breakers were installed correctly, you should be tripping them very quickly.
Did you mean 13 feet per second