Jessi was born in Rapid City, South Dakota, on July 27, 1980. She attended WyoTech in Laramie, Wyoming, where she earned a degree in custom automotive fabrication. Since the launch of her career, building a custom vehicle for SEMA, Jessi raced in King of the Hammers for four separate years, including her 2014 Spec Class win, and took second place in the Baja 1000 Class 10 division in 2011. She also competed in the Rallye Aïcha des Gazelles, and was one of the first women to be invited to drive in The Race of Gentlemen. In addition to her need for speed, Combs was a TV personality, hosting shows such as Overhaulin', Mythbusters, All Girls Garage, Extreme 4x4, and most recently in Autoblog's The List: 1001 Car Things To Do Before You Die. In 2008, she released a line of women's welding gear, as a spokesperson for Lincoln Electric. And in 2015, she released a children's book, Joey and the Chopper Boys, a story about a girl who loves motorcycles.