Drove the car for a couple minutes with a 8-cell nimh pack. Don't have a charger for that pack so once it's gone its gone... It drove pretty good and it was pretty fun even at not so quick speeds. Once I split my 4s zippy I'll have a copule 2s packs I'll probably run in a parallel so I can still run them in a series later.
Temps were ~110-120 both on the motor and esc; battery was cold. I think the front diff is stripped or loose; I'll take it apart probably tomorrow or later tonight. I'll clean off my work bench first.