The LEGO Racers theme which was introduced in 2001 was the successor of LEGO Race. Since the theme started, most race cars in LEGO System and TECHNIC universe have been released under the LEGO Racers theme. Racers was discontinued in 2012 and it was succeeded by Speed Champions, introduced in 2015.
2011 LEGO Sets
For collectors, 2011 was a significant year in that LEGO released the first Internal sets Moulding Machines (4000001) and LOM 2011 Moulding (4000002) which have paved the way for high value future collections. A few notable themes introduced in 2011 were Ninjago, Winnie the Pooh, SpongeBob SquarePants, Alien Conquest and LEGO Master Builder Academy. Of course LEGO Ninjago set the stages for a decade of collecting. However, in 2011 LEGO also discontinued a number of themes which included Ben 10, Power Miners, Toy Story, Prince of Persia, Space Police III, BrickMaster and the loved Trains theme.