I drove one today and it was just 2x 6s traxxas nimh packs in series and that was insane! I def think 3s will be pretty damn crazy too. If SC cells could fit 2 4s packs in series would prolly be perfect. I may wind up with one of these things but I doubt I'll get to crazy with it. There talking about racing them at the lhs, if they do I'll def get one as it would be cheaper than setting up a 1/12 pan car.