This covers the cars that have boss variants (minus the Cizeta, as that doesn't show up in traffic), but I'll also add some traffic exclusives (Toyota Prius as an example).
A fourth variant of cars that don't have four traffic-usable ones. So far, it includes: Shelby GT500 Convertible Saab 9000 Taxi Porsche 964 Carrera (And Carrera 4 sub-variant)
