I work in a lot of different custom paint markets. I am finding that computer generated graphics on vinyl are starting to show up on many commercial vehicles, and some segments of the hobby, like sand rails, and other off road toys.
They don't offer the candy or metallic finishes, or the depth of a glossy finish, but there is no doubt that they can be breathtaking, and offer a degree of art many painters cannot match.
I am seeing some vinyl suppliers charging "paint" prices, but there is usually some savings over paint, if you can live without the gloss-irridescence-depth of paints.
Here is a chance to voice you opinion about their suitability for custom cars.
