The Chevy Colorado ZR2 is ... filed a trademark for the name "ZR2 Bison." In fact, we may have already seen a preview of the truck last fall with the Colorado ZR2 AEV concept at SEMA.

Last year at SEMA, we saw a fairly radical Chevy Colorado ZR2 concept from ... have caught what appears to be a prototype of the Colorado ZR2 Bison overlander out testing in Michigan.