Plymouth Pronto Spyder
The Plymouth Pronto Spyder was a 2-door roadster concept that debuted in 1998, using a mid-mounted, turbocharged, 2.4 L,, 4-cylinder engine and a five-speed manual transmission.
Styled to recall European roadsters, the Pronto Spyder's bodywork used lightweight recycled materials, largely polyethylene terephthalate, or PET, over a steel chassis. The vehicle weighed. The interior used spray-applied color, in red, and a tortoise-shell steering wheel rim, subsequently used on the Chrysler 300C.
To enter production, the concept would have needed to meet safety regulations, have better body stiffness, suspension travel clearance for the wheelhouse, and rear-view mirrors, among other changes.