If I ever got tired of my car and wanted to burn it down somewhere safe and legal to do it, I’d do it the same way as it is usually done for any kind of car: break the window, douse the inside with a flammable liquid and light it up. I’d also have to be very careful while lighting it because if the flammable fumes have time to build up inside before being lit, it could explode and injure the person lighting it.