Kitt Shelby Mustang for the first time featured in the latest Knight Rider movie and will of the auctioned for charity. Barrett-Jackson Announced That the two cars available at auction. Shelby Mustang for Kitt Auction will be held (as a site-on timers say at this time) in one day and six hours and will be beneficial for education. Both Shelby Mustang was auctioned off the Mustang and Super Kitt Shellby Attack Mode Kitt Shellby Mustang. Both cars are based on the Shelby GT500KR and provide estimated power output 540 hp.