The History of Automotive Innovation

Over the nearly 150 years since Karl Benz patented his motor-wagon, the automotive world has been home to some truly bizarre and fascinating experiments. While some of these pairings emerged from the competitive fire of the racetrack, others were born from engineering necessity, creative design, or simply the desire to push boundaries. Here is a look at some of the most unique instances of doubling up in vehicle history.


Legendary Feats and Unique Machines

  • The Indy–Charlotte Double: In 1999, Tony Stewart pushed the limits of human endurance by attempting the 'Double'—a grueling 1,100-mile journey to compete in both the Indianapolis 500 and the Coca-Cola 600 on the same day. He remains the only driver to successfully complete both races on the lead lap, a feat he achieved in 2001.
  • Cizeta V16T: Born from a collaboration with electronic music pioneer Giorgio Moroder, this supercar featured the first production V-16 engine since the 1930s. The engine was essentially two V-8s joined in a single block. Only 10 of these Gandini-designed cars were produced, notable for their unique T-shaped engine and gearbox configuration.
  • The Ruf Twin-Steering Porsche: During the 1973–74 oil crisis, business slowed significantly. To keep his team busy, Alois Ruf Sr. utilized spare parts to create a Porsche 911 with two functional steering wheels. As he famously told his son, «we might as well do something just fun.»
  • Maserati Biturbo (1982–86): This vehicle marked a milestone as the first production car to utilize twin turbochargers, with one unit dedicated to each bank of its V-6 engine. Despite this advanced forced-induction setup, the car is often remembered more for its unreliable build quality during the Alejandro de Tomaso era.

Engineering Power and Versatility

Engineers have frequently looked toward dual systems to extract more performance or offer greater utility:

  • Bugatti Type 59/50B: In 1939, Bugatti debuted a specialized Type 59 with dual rear wheels to manage the massive output of its supercharged 4.7-liter straight-eight engine. Driven by Jean-Pierre Wimille, the car secured a second-place finish at the Prescott Speed Hill Climb.
  • 1993–2000 Aston Martin Vantage: By equipping its 5.3-liter V-8 with two Eaton M90 superchargers, Aston Martin unlocked 550 horsepower—a massive figure for that decade. The later V600 package increased this to 600 hp, bringing the car into the performance league of the McLaren F1.
  • 1993–2000 Nissan Pulsar NX: Targeting consumers who couldn't decide between a hatchback and a wagon, Nissan offered the Pulsar NX. This unique vehicle featured a modular design with a removable hatch that could be swapped for an optional 'SportBak' canopy, satisfying the market's desire for versatility.

Brothers in Racing

Beyond mechanical hardware, some of the most legendary pairings in automotive history involve people. Terry and Bobby Labonte made history as the first brothers to both win NASCAR Cup Series championships. Bobby even served as a fabricator for his older brother’s team before clinching his own title in 2000, cementing their status as a dynasty in the sport.