Brit here. I think we’re the same? I’ve never gone to a concert by car. It’s usually in a major city and it’s just easier by train. Not cheaper, though.
I’ve had friends tell me they’ve been stuck in car parks for hours while leaving concerts, so people obviously do it. It’s just not a great idea.
I guess it’d be different if we had massive car parks instead of train stations, which is becoming more the case with shopping.