You can find a list of UAW-made cars here: http://www.uaw.org/uawmade/cartruck2006.cfm

There are a few Toyotas on there, but no hybrids.

Actually, the Toyota workers in Japan who make the Prius do have a union, but I think its seen largely as a "company union."

I've had the same concern, btw. I buy union-made jeans, shoes, jackets, food, etc. I stay in union hotels when I travel. My wife is a member of TWU Local 555, and we're pretty serious about buying union whenever we can. But when I bought my used accord I just couldn't justify buying a crappy GM or Ford vehicle I didn't want when some guy was selling a quality smaller car.

I think there is a big difference between buying nonunion just because its a few cents cheaper (which often, it isn't. My union-made jeans aren't any more expensive than a pair of Levis, and my union-made shoes aren't much more than a pair of Nikes) and buying nonunion because all the union-made products are crap due to management decisions.

But I'm not sure how well that argument will play with your dad.