Sounds like you're looking for something like the Ford Crown Victoria, or perhaps a Lincoln Town Car. I had a Crown Vic for my first car years ago, an '85 model. Horrid fuel economy, geriatric handling and design, not to mention downright scary in slippery conditions, but it had torque, comfort, and size. The current Vic isn't much different even 20 years later. I can't say that mine was reliable, but it did have 130-160k miles on it while I owned it. However, my Subaru has gone from 108-175k while I've owned it and has cost me mere pennies in repair costs by comparison. On the other hand, if I lived in a warmer climate and had money to cover the repairs and fuel, I'd take another look at the Crown Vic.
-Matt