Street cars MOVE though! Are any of those Nitro? Not a big fan of the electric cars because Nitro's are noisy and smoke <G> It seems so much more proper for a vehicle to actually have an engine.
But what's the point of moving if you need "lab" conditions?!
Nitros may be noisy and smoke but it's all flash. Electrics own nitro in racing and also climb stuff better because they don't need to rev up and can't stall.
I dunno, I've never seen a Nitro racer that had a continuously variable trany and a throttle control that keeps the engine in it's power band. The engines can put out massive amounts of power, not the fault of the transmition that it can't use it properly. They're more popular in off road vehicles where the tires spend half their time just spinning to get traction =)
Depends on how many packs you buy =) You can always add more, or increase the size of the pack and sacrifice a little performance for running time. You'd be surprised how boring they get just goofing around at home though. They tend to just collect dust after a while.