Don't do it!
Aside from looking good, I can't say anything else positive about this product. After several days of drying I can still gouge it with my fingernail. I was only using it on an old tool box so the only real loss is the cost of the product but I would be very upset if I had actually used it on a vehicle. Please don't ruin a perfectly good vehicle with this product. Real spray-in bedliners are expensive but this stuff is nowhere near as durable as a professional spray-in.