monster truck question.......

[police1]

hey guys. i know this is wayyy  off from what is normally talked about on here but i was wondering if anyone can answer this or remembers seeing something like this.a few years ago i was at a local swap meet in ohio. there was a guy there selling monster trucks(smaller than the real ones of course) but they were pretty big where an adult would be able to dirve them. they had huge tires on them and i think they were running some kind of motorcycle engine in them. you could buy a complete one doen or buy the body and the instructions to build one out of steel. does anyone know if there is a company out there still making someting like that? i know they weren't cheap either...