Oh, no question about that. In the city is where hybrid vehicles shine. On the other hand, you have to be careful about where you fill up your diesel tank while cruising on highways, they don't sell diesel everywhere! And when they do sell diesel, you have to wash your hands for a while for the smell to disappear... I know, I've lived with TDI's for over a year, and got nervous a few times while on route to NB and hoping to find a station that sold diesel with the needle on E... You know, there's pluses and negatives with everything.
Plus, to get the awesome TDI engine, you have to get the rest of the VW car with it... and I'd rather not, personally, for a few more years, until they've proven they can build a reliable car that's inexpensive to own and maintain. For the moment, I'd rather get something that I trust a little more.