The 45-year-old celebrity got his start as a professional freestyle motorist at the young age of 18, while simultaneously juggling AMA supercross circuiting (via DirtBikePlanet). Despite having sustained various serious injuries throughout his career, he is known for being quite a pioneer when it comes to his stunts. According to The Things, Hart was the first athlete to do a backflip in midair and land on his bike, which was eventually called the "Hart Attack."

Aside from motorcycling, in 2004, Hart founded Hart & Huntington Tattoo Co., which was even featured on the A&E series "INKED". His tattoo parlor is located in a casino in his hometown of Las Vegas, and since their feature on "INKED", they have expanded throughout the United States and Canada. Hart has also ventured into acting and had a part in the 2003 film, "Charlie's Angels: Full Throttle" (via IMDb).