Back in 1972, Duane’s sister-in-law drove a yellow Dodge Charger off a dealer lot in Alabama — and by 2000 had decided it was worth more parked on blocks in her garage than on the road. Never touched by snow, never sold, and still owned by its original buyer, the car has become a kind of retirement fund she can start the engine on. There’s also a detail in its build sheet that shouldn’t technically exist. Read on to find out what it is.