2002 Buick Park Avenue Ultra 4dr Sedan (3.8L 6cyl S/C 4A)
Don't believe the review that says this drives like a BMW. It doesn't. I had a 1984 BMW M6. Fantastic, but totally impractical. I bought the Buick as my winter car with 95,000 miles on it when 3 years old - my 3rd Park Avenue. I still own the Park Av, but not the BMW. If you want a car to zip along an autobahn buy a BMW, if you want a car to drive on the typical lousy roads that you get in New England, buy the Buick. The one I bought had all the toys, rear parking, touring package, heads-up display. It's a really great car. Don't believe the mileage - I get 18 "city" and 27-30 mpg, depending on how hard I drive, on the interstate.
Trunk easily fits two hockey bags - try that in your 3-series BMW.
Sort out GM management - they stopped making this great car.