The other car already featured on AutoPuzzles is your PJ488, a custom design/built car called "RoadQueen Diva".
I'm not totally sure what you are looking for regarding innovation, but I suppose that it the interesting painting technique whereby several layers of different colored paint completely overlay the car, with the lower layers revealed as the upper layers are worn/damaged, hence the name "Scratch". The designer likens the idea to a worn pair of jeans whose appearance is always changing as they wear, and each car so built becomes unique in appearance, over time, as it is damaged uniquely.