[Lee Stewart]

While the Mustang has always been rear-wheel drive, its nearly boundless popularity in the middle of the 1960s encouraged Ford to experiment with a four-wheel drive model developed jointly with England-based Ferguson Research. The company shipped a pair of V8-powered Mustangs across the Atlantic and asked Ferguson to install its four-wheel drive technology in one. The other remained stock so product planners and executives could drive four- and two-wheel drive models back to back.

Ferguson also added Dunlop’s mechanical Maxaret technology, which functioned a lot like modern-day ABS systems. The four-wheel drive Mustang handled well but it never received the green light for production, likely because spinning the front wheels would have made it too expensive. It’s in the Tampa Bay Automotive Museum as of 2019 and it remains drivable.