Incredible Machine. Bought mine used and it totally rocks; owned many large and small cars. This one is a blast to drive, turns heads, is super comfortable, easy to maintain, and for its size (both overall and engine), it gets great mileage - 26.5 on my last trip to DC. Merc really dropped the ball on the marketing of this vehicle.
Drives like a much lighter car, best all-around vehicle, super reliable (like my Grand Marquis - no repairs after 9 years of ownership).
Discontinued :-( I would buy another in a heart-beat. They could have easily made it faster if they wanted to but it is easy enough to mod to your liking.