I don't really like his comedy but I have a ton of respect for the guy when it comes to cars. He's forgotten more about cars than I'll ever know. It sounds like common sense at this point but what he's saying rings true. I think most americans would buy american if the cars were all equal. So the automakers just need to focus on cheap/quality/reliable cars and they'll gain their marketshare back.
Leno is funnier than letterman on a nightly basis. Letterman just does whatever weird thing he can think of. Plus letterman doesn't have a huge collection of rare cars.
I agree, leno isn't that funny but if you have to choose between him and letterman i choose leno. I also think he's exactly right on cars too. We need better built vehicles. My wrangler is a solid brick, I don't think I could wreck it if I tried, but that's because it's built well. Chrysler needs to do that with the rest of their autos too now.