That’s a ’95 Freightliner Classic that was at the 2013 Barrett-Jackson Auction in Palm Beach. The Freightliner Classic is a series of Semis that were made between 1990 and 2010. The engine is a 12.7 liter straight-6 that produces 500 horsepower. This one was modified to have a General Electric J79 afterburning turbojet (the same engine that powers the Lockheed F-104 Starfighter) that produces 10,000 pounds of dry thrust (15,600 with the afterburner). The transmission of this one is an automatic, but I couldn’t find out how many gears it has. This semi can reach 225 mph in 7 seconds with the J79.