A stadium truck of some kind, that's for sure.
Did you check for markings on the parts? I remember that my old rc had ''Team Kyosho'' written on the belt. They might give you an idea.
It's NOT a Stadium truck. It is an older on-road car. The purple hints of an old HPI RS4 possibly but the motor /exhaust looks more like CEN.
AS mentioned above.look for markings/names on the parts. Some more pics from all angles might help too.
I agree with @Racer 1966 this is certainly an on-road car and the purple does strike me as an HPI, though I don't remember them ever having a chassis like that before.