A Bodies are heavy? Hah

Modern cars are actually surprising heavy, much heavier for their length than 60s-era cars. Instead of wide open spaces inside the fenderwells, and behind the grill, every inch is packed full of wiring, plumbing or electric gizmos. Plus, they have rollover and side impact protection built into the unibody. If they didn't use aluminum and plastic so liberally, they would probably weigh half again more per foot of overall length. Here are some 2013 curb weights:
BMW 650i (2dr) - 4380lbs
Buick Regal GS (4cyl) - 3785
Honda Civic Si Coupe - 2905
Dodge Challenger SRT8 - 4350
Jaguar XFR - 4425
Mazdaspeed3 - 3253 (dinky, but weighs as much as a 67 Valiant)
M-B E63 AMG - 4285
Porsche Panamera Turbo S - 4575
Bentley Continental GT - 5305
Rolls-Royce Ghost - 5495 (!)