Intellectual Property Rights (IPR) search - cpb.gov
Be careful. The Z logo is a protected trademark. Once you mass produce those for resale w/o permission from the license holder, you're going to open yourself up to at least a Cease and Desist letter. Then you'll find out that someone will take your idea and have the Chinese mass produce it, smuggle it in, sell it, which means they're trafficking in counterfeit goods (among other violations).
While the fact that you have a good idea and can do it with garage tools is great if applying it to your car to make it unique, mass producing it is a whole new ball game.