When you describe someone as ‘british’ it means they were either born in Britain or have the nationality of British on their passport. Someone born in Australia or having Australian on their passport is described as an Australian, not a Brit. So when you say “you british” you are directly stating the person or group is british, which is possible but you are unlikely to know, just like you don’t know that India do indeed import cars, but impose massive tarifs to discourage it. As for blindly believing an auto executive…even Elon Musk stated that he would never forget those that purchased S&X to make Tesla happen, and many believed him.