[junkman]

Cool idea and sweet you are a part of it. The only bad thing about the micro crawler is unless someone is there monitoring the exibit constantly if the kids flip them over they'll loose interest waiting for someone to tip them back over. The 18r would be pretty good, just wonder about their size if you get too many in there. Honestly I think some x-mods would probably work pretty decent. Their cheap, realistic looking, hold up decent, and for a "toy" you can get parts for them. I guess you could find some sort of super high turn motor to slow them down. The remotes are small and light too making it easier for kids to drive.