Tesla's new Roadster uses a multi-mode fan and ground sealing system to generate up to 2gs of downforce, allowing it to defy gravity and even hang upside down. The automaker demonstrated this with stunts including a C-shaped ramp jump and mid-air flip. However, Tesla isn't the first to use fans for downforce.
Mc Murtry Automotive's Spéirling electric sports car, which also clings upside down to surfaces, uses Downforce-on-Demand technology with two fans. The concept dates back to the Chaparral 2J in 1970, a Can-Am racer with a suction system that generated 1.25g to 1.5g of suction. Another notable example is the Brabham BT46, or "Fan Car," designed by Gordon Murray for the 1978 F1 season, which used a large rear fan and skirts to create suction.
The BT46 won its only race at the Swedish Grand Prix. Mc Murtry will produce only 100 Spéirling units starting at $132,300, while Tesla plans Roadster production for 2028.
Source: Engadget · Summarized by HeadlinesBriefing