Fuel cells are much sturdier than regular gas tanks. The Cobra R was the only car in the test to have one. Lighter wheels and stickier tires go a long way toward improving a vehicle's handling. While the Viper's ACR package includes lighter 18-inch BBS wheels, the tires included are no different than the ones fitted to regular GTS cars. The Corvette Z06 and Cobra R have wider wheels and stickier tires compared to the regular versions of these cars.
Less weight improves acceleration, braking and handling.
Dodge achieves this on the Viper GTS ACR by removing the air conditioning, radio and fog lights. These are also removed on the Cobra R, as is sound-deadening material and the backseat. The Corvette Z06 features a lightweight titanium exhaust, lighter wheels and tires, and thinner glass for the windshield and rear window. While they aren't expensive to purchase via the aftermarket, it's nice to see Dodge including them with the ACR package. This technology, while not really a performance feature, is still critical.