We use polyurethane 2 component (2K) paint. This is the best paint available.
If someone interested in chemistry had asked 20 years ago what car he should choose if he wanted to be sure it would have a two-component polyurethane coating, the answer would have been: “You have to buy a Rolls Royce – Polyurethane guaranteed, regardless of the model.” Now even the less affluent can call a car with a polyurethane coating their own: Roughly 25% of all cars produced today have a polyurethane clearcoat. -from Bayer coatings website
Here’s more info about Automotive Paint technology.