Modeling and Copyright of the original vehicle or product is not always an issue, but Licensing Agreements often are. Even then, Licensing Agreements do not prevent a third party from making and selling a model of that product in every situation. This goes for Logos, trademarks, and other unique features. Mak a model of a Chevy Corvette and you can be very detailed. Try to do the same of a Indy Pace Car version of a Chevy Corvette and you will have problems with the details, or even the use of Indy Pace Car in the name.

ratscloset
aka John