Think of the Town Car as an extension of your living room: Your house doesn't squeak, rattle or roar around you, and neither does the Town Car. It's exceptionally proficient at blocking out engine and traffic noise, as well as the racket caused by tires rolling over coarse road surfaces. You rarely need to raise your voice to hold a conversation with someone in the backseat. In general, the engine provides plenty of power for passing and freeway merging. But this is still a big, heavy car. When we put the pedal down on an interstate entrance ramp, the engine growled audibly and the resulting acceleration was less than breathtaking. The Town Car comes with only one powertrain: a 210-hp 4.6-liter V8 engine and electronically controlled 4-speed automatic transmission. This is a thoroughly modern engine - Ford's modular V8 - that should provide all the oomph you need in most circumstances, and unlike the engines in many luxury sedans, it will run on regular unleaded fuel.