I like the suggestion of a golf diesel instead. Given that I mostly drive highway, it makes the most sense for me.
pffffffftt. Diesels stink, they have no power, and the fuel is more expensive than gasoline.
They don't stink anymore, and no power? Yeah, that's why they use them for semis, to haul freight, and put them in tanks.
It is more expensive than gas, but diesel engines like those in the VW Golf actually do get 60mpg, unlike the Prius. So while it may cost you $0.50 more a gallon, you'll be using far less in the first place.