I found out today there will be a whole documentary series about the Batmobile coming out later this year, so I started looking into it, and apparently a few Batmobiles were either Chevy-powered, or built on a Chevy frame.
Tim Burton's Batman featured a Batmobile, which I love, that was built on a Corvette chassis. The most recent 'mobile, which I hate, is rumored to run a 340 hp 350 ci small-block V8 that "really moves." In the comics, Batman even had a 1960s Corvette-based Batmobile at one point. The third movie in the Batman trilogy is coming out on the 20th of July, so go see it ya car nerds, there's a Chevy in it.