Looks like Arsenal missed a couple of my picks, so this is a good excuse to make a quick summary of my picks.
Pre-war
Ford Model B
(Round 3; Post#90; page 5)
50's
Ford Thunderbird
(Round 13; Post#374, page 19)
60's
Chevrolet Camaro
(Round 4; Post#96, page5)
70's
De Tomaso Pantera
(Round 8; Post#222, page 12)
80's
Ferrari 308
(Round 12; Post#333, page 17)
90's
Ferrari F355
(Round 7; Post#214, page 11)
2000+
Saleen S7 Twin Turbo
(Round 6; Post#175, page 9)
British
McLaren F1
(Round 1; Post#29; page 2)
European
Porsche Carrera GT
(Round 5; Post#139, page 7)
Asian
Toyota MR2 (Mk1)
(Round 18; Post#448, page 23)
North American
Shelby SuperCars (SSC) Ultimate Aero
(Round 2; Post#46, page 3)
Race Car
Lotus 79
(Round 16; Post#420, page 21)
Sedan
BMW M5 (E34)
(Round 11; Post#320, page 16)
Coupe
BMW M3 (E30)
(Round 10; Post#275, page14)
Convertible
BMW Z8
(Round 9; Post#266, page 14)
Movie Car
Wagon Queen Family Truckster (from National Lampoon's Vacation)
(Round 15; Post#416, page 21)
Exotic
Mercedes CLK GTR
(Round 17; Post#441, page 23)
Concept
Infiniti Essence
(Round 14; Post#379, page 19)