English is not my first language and I never lived in the us. Chevy is very pervasive and also rarely used mixed with Chevrolet. It's also mostly used for more

English is not my first language and I never lived in the us. Chevy is very pervasive and also rarely used mixed with Chevrolet. It's also mostly used for more common cars, whereas corvette is very known, at least internationally as chevrolet corvette, and never chevy corvette. So it seems that not only using Chevy is very common, but it's so ingrained that people seemed to never mention Chevrolet is the same context for me. At some point, I remember thinking that that weird I've never heard of must be a surname to an existing brand, like Chevrolet, and having done a quick check, but I didn't realized it must not have been that conclusive at that time, and I never clarified the situation in my head before reading your comment.