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Tesla Roadster Defies Gravity: A New Era of Downforce?
18 Oct
Summary
- Tesla Roadster uses fans to generate extreme downforce, defying gravity.
- Chaparral 2J pioneered fan-based suction technology in 1970.
- McMurtry Spéirling electric car also employs suction for extreme grip.
The highly anticipated next-generation Tesla Roadster has showcased groundbreaking capabilities, performing stunts that suggest defiance of gravity. Tesla explains this is achieved through a multi-mode fan and ground sealing system acting as a powerful downforce generator, creating suction to hold the car upside down at any speed.
This technology is not entirely new. McMurtry Automotive recently responded to Tesla's unveiling with a demonstration of its Spéirling electric sports car clinging upside down, utilizing its Downforce-on-Demand system with two fans. Even further back, the 1970 Chaparral 2J prototype, powered by a Chevrolet V8, pioneered suction technology with two fans and a skirt system to generate significant downforce.
Another notable precursor is the Brabham BT46, or 'Fan Car,' an F1 racer from 1978. Inspired by the Chaparral 2J, it featured a fan and skirts to create suction. The McMurtry Spéirling Pure, unveiled in July 2026, can generate enough downforce to stick to surfaces even at a standstill and corner at over 3g.
The McMurtry Spéirling Pure is limited to 100 units, starting at $132,300, with deliveries expected before the end of this year. Tesla's Roadster is slated for production in 2028, with reservations open now, costing $50,000 for the base model and $250,000 for the 'Thrust' trim.
