BMW’s five-year-old Gina never gets old. The most delightfully, sensuously alive car I’ve ever seen, with a snarling, crackling, totally real 4.4-liter V8 beneath a hood that opens like a human chest during thoracic surgery. It’s a wearable vehicle, a modern-day baidarka, and it’s the only concept car I’d actually like to own. What’s yours? (Photo: BMW)