I used it on the rubber, vinyl and leather on my old Porsche 944s and was pleased with the results. It was good as a mild cleaner and protectant and did not leave a slippery, shiny surface as Armor All would. It also seemed to help reduce dust attraction to the vinyl surfaces inside my car.
I use it on my boat. I have friends who use it on the plastic surfaces of their Corvettes. It is suppose to be one of the best. A little pricey. You can find it at most Marine Supply Stores (about $13 a spray bottle).
More for interior, inside of the vehicle. If for use externally, great for garaged vehicles, but if your car is getting sun BAKED and exposed to rain often enough, it won't last.
How much can I sell you the bottle for--? I hate the stuff-looks [censored] on anything I put it on-interior, wheel wells etc-I wouldn't dare put it on a Corvette body