The perfect vehicle for me and me alone? Assuming performance et al. is a given?
A retractable hard-top, a la Mercedes SL500. IMHO, the most ingenious piece of convertible engineering in history.
A GREAT sound system with subwoofer, changer, and auxilry input for iPod/whatever.
Cylindar Deactivation
Four wheel drive and/or traction control
Awesome safety equipment (i.e. side air bags, et al.)
Those funky "turn as you go" headlights
Probably more, but off the top of my head, ^^.