IN A NUTSHELL 🚗 BYD sets a new speed record with its YangWang U9 Xtreme , reaching 308.4 mph. sets a new speed record with its , reaching 308.4 mph. ⚡ The U9 Xtreme outperforms Tesla’s Model S Plaid , previously the fastest electric vehicle. 💰 Priced at approximately $151,000, the U9 Xtreme is a bargain compared to the $3 million Bugatti Chiron. In a significant leap forward for electric vehicles, Chinese automaker BYD has shattered the existing top speed record for production cars with its YangWang U9 Xtreme hypercar.