Features of the 1999 Dodge Charger R/T concept car include a 4.7-liter V-8 engine that runs on compressed natural gas through a rear-wheel drive train and a five-speed manual transmission. The concept car was designed to be 16 inches shorter in length than the original Charger upon which it was based.
The 1999 Dodge Charger R/T was designed with special pressure cells located inside a fiberglass storage tank as part of its compressed natural gas fuel system. The storage tank was to be wrapped in a gas-impermeable high density polyurethane thermoplastic, with additional layers of high-strength carbon and glass filaments protecting it. Each of the engine's cylinders were designed to lay in a foam egg crate assembly that absorbs impacts and protects the components inside. This design was conceived in order to offer drivers greater driving range and a less pronounced ecological effect without sacrificing trunk space.
The 1999 Dodge Charger weighed 3,000 pounds and was 187 inches long. It had functional side scoops like those of the Dodge Viper and featured a chrome-plated central mounted exhaust similar to that of the Viper. This four-door concept car was never produced, and later Dodge Charger models bear little resemblance to this particular concept.