This is the 1984 Dodge M4S, also known as the PPG Turbo Interceptor. It was commissioned and paid for by PPG Industries and cost somewhere around $300,000. It was powered by a 2.2 liter four cylinder engine engine with twin turbochargers (Garrett T25's) and a twin-cam 16-valve cylinder head worked on by Cosworth and Bosch fuel injection. It's estimated to make between 440 and 500 horsepower, and roughly the same amount of torque. In order to handle the output, it has a custom hand-built spur-gear 5-speed transmission with a multi-disc clutch. The highest speed it was clocked at was 195 mph.
For high-speed runs it had this high-mount wing for added downforce and stability.
The car's main claim to fame (and where it picks up the 'Turbo Interceptor' moniker) is from the 1986 film The Wraith, where it's the hero car. In this film, pre-cocaine Charlie Sheen gets Sherilyn Fenn topless and Randy Quaid chases a bunch of street racers in K-car police cars.
The M4S would've been a fantastic machine and could've catapulted Chrysler out of their image at the time of boring K-cars and boring minivans. Alas, it was never meant to be. Reportedly there were six actual cars made, plus two stunt cars made from the original body molds that survived filming on The Wraith. The M4S is just a footnote in Mopar history, and that's a Goddamned shame.
The M4S in its "Turbo Interceptor" guise for the movie 'The Wraith'.