Oh man, that is so wrong, but laws are unfortunately, interpretive. With this logic however, ALL models of any existing object would be illegal to represent in digital form. Look up fair use and public domain.

If he adds a Honda logo, he would be in breach of Trademark, but if he models a motorbike, it is not illegal. Building a PHYSICAL reproduction for sale might be illegal. Honda doesn't own a patent on motorcycles, nor do they own the look and style. They own a name, and they can stop people from duplicating their physical assets, and using their intellectual property (schematics, blueprints, etc) to build an identical item. An artistic representation of an object is not grounds for legal action.

Note: I am not a lawyer, however, I did work for one in the Information Security field, and stayed at a Holiday Inn last night...
Mark