2003 Cadillac Sixteen Concept
While last year's Cien concept could be analogized to an F-22 Raptor stealth fighter, the wreath crested company's latest design exercise might be more akin to a B-2 Spirit, the massive bomber that shares the fighter's sharp-edged and angled stealth design architecture. The Sixteen dwarfs all other Cadillacs currently available. It's even longer than the extended-wheelbase Escalade ESV.