Weighing in at just 88 pounds, the Donut Motor is fully integrated into the wheel and packs 856 horsepower. That’s the same weight as Koenigsegg’s Dark Matter motor, but with 56 more horsepower.

"We like Formula 1 to consider efficiency ... very similar horsepower to what we have today. A current F1 engine has around 750 horsepower, and you have 80 horsepower more from the KERS.

Ford's Mustang Mach-E NASCAR prototype, an all-electric 1,360-horsepower racecar, combines innovative electric technology ...