[joeld42]

If you are looking for an existing car, there's a lot of sites selling pre-made vehicle models for pretty much anything, that's probably going to be higher quality and need less cleanup than anything you can get from scanning.

One of the problems you'll have is photoscanning does not do well with shiny surfaces, as the highlights move and confuse the reconstruction. If this were a model or maquette or something, they would probably spray paint it matte before scanning, which I doubt you want to do with a real car.

If you need high quality, honestly I'd just hire a hard surface modeller. There are people out there who make cars all day every day. If you just need low quality, Unreal's RealityScan app, Polycam, or AliceVision are good places to start.