I disassembled it, sanded down the entire car, and after applying 300 rivets one at the time, I was ready for a Break!!! LOL.

Added the metal gears, and lines on the sides, new metal headlights, built new fins, front end, rear turbine, and added the exhaust pipes on the hood.
I then sculpted the rims, and the center of the windshield.
The windshield was top coated clear, the decals were applied to styrene, and glued to the dashboard.
Full base coat, dry brushed several shades of metal color from Vallejo metallics, and also repainted the interior using Vallejo paints.
Added new tail lights, side vents, and grills, Batlogo on the hood, and metal emblems on the wheels.