The experimental 10-cylinder was developed for a sport sedan, and it was believed to have been destroyed.

Experience the raw power and incredible sound of the BMW M5 E39 V8, now with a Supersprint X-Pipe and Skytune exhaust! Hear the engine roar and the exhaust crackle in this thrilling ride.

The team at DriveTribe uncovered and drove a perfect example of this daring absurdity in a YouTube video about an E39 BMW M5 ...