Speed driver Jessi Combs died at the age of 39 on Tuesday while trying to break her own world record for speed. She was known as the "Fastest Woman on Four Wheels". Fans knew her best from Myth Busters. She was a builder and a racer. She went on to star in several other shows like Overhaulin' and All Girl Garage. Jessi set her first world speed record in 2013 reaching speeds of over 400 miles per hour. She broke her own record in 2016 when she reached a top speed of 477 mph. She was attempting to break that record when she suffered a tragic accident. The world lost one hell of a woman, who was an inspiration to many.