Porsche Carerra GT Hot Wheels review. Classic Game Room presents a CGR Garage review of the PORSCHE CARERRA GT HotWheels car in grey from Mattel. CGR Porsche Carerrar GT video review features the gray Porsche Carerra GT HotWheels supercar found in the 20 pack of Hot Wheels from Mattel. Styling is great and detail is accurate, but is the Porsche Carerra GT a better, more elegant car than the Porsche 911??