This is an interesting comment. "selfie(trademarked)" implies that someone is selling something with the word "selfie" principally identifies a certain product

This is an interesting comment. "selfie(trademarked)" implies that someone is selling something with the word "selfie" principally identifies a certain product and seller. There are two types of trademarks; registered and common law. Registered trademarks have to be registered with the government, and while a brief search at http://tmsearch.uspto.gov http://tmsearch.uspto.gov does bring up many "selfie" related trademarks, they are all related to taking pictures of yourself (or your pets), and trademarks are industry-specific, and so do not apply to self driving cars. There are also common law trademarks, which are created when you first start selling a product in a geographical area. The US is one of the few countries to recognize common law trademarks. But in order for you to have one, you need to actually be selling something. Of course, I don't think there's any penalty to lying that you have a trademark, so perhaps you're just doing this "to be safe". Either way... very interesting!