The 55th Mobil 1 -- 12 Hours of Sebring put on by Sports Car Vintage Classic Racing Association at Sebring will feature the MGA. Modern Vintage Racing was first introduced to America at Sebring by the founders of SVRA in 1978. Since that time SVRA and SVRA competitors have been a fixture at the 12 hour race week. Seasoned spectators know to get to their favorite viewing spots early when the Vintage and Historic cars are due to run. Most agree that next to the main race on Saturday, the Vintage races are the most popular amongst the fans.