A barn-find 1970 Ford Mustang convertible sitting in the Netherlands hides a genuinely strange secret: factory all-wheel drive, engineered by the same British company that later built the world’s first production AWD car, the Jensen FF. Missing its engine and front drive unit after decades of neglect, it may be the only convertible Mustang ever converted this way. Read on for how a tractor company ended up building AWD Mustangs for Ford.