Twin nuclear fission turbine drive. Electrified riot deflector panels. Eight-track cassette, hi-fidelity audio, bucket seats.
Color later...maybe. Had fun just doing this in furious detail. Mechanical pencil with a high contrast pass in Photoshop and some coloration to the linework. I like the pencil dust haze feeling, I think inking it and cleaning it up would look a little to clinical, soulless.