My 2 month old 2012 Buick Regal GS.
Navigation, 9 speaker HK sound
20" alloys in Pirelli P-Zeros
14in Brembo fronts
Trifecta ECU Flash (increase to ~310 bhp)
K&N Panel Filter
I catch a lot of 'old people' jokes from friends (I'm 26), but this car does get a surprising amount of looks, and I have yet to see another GS in my area.
Cue the geriatric jokes of your own