Green Forumula Street Hot Wheels review. Classic Game Room presents a CGR Garage review of the FORMULA STREET HotWheels custom car from Mattel. The Formula Street is bright green with a plastic body and die cast metal undercarriage. It has a weird looking red window and "red line" style wheels as well as the number 8. CGR Formula Street video review features this collectible HotWheels car that was found in a Hot Wheels 20 pack.