Here is a list off (all??) the cars that will be in the new March DLC!!!!:
2008 Audi S5
2008 Audi TT Coupe 3.2 quattro
1973 BMW Motorsport 3.0 CSL E09
2009 BMW Motorsport M3 E92 Coupe
2008 Ferrari 430 Scuderia
1990 Ferrari F40 Competizione
1996 Ferrari F50 GT
2007 Lamborghini Murciélago LP640
2008 Maserati GranTurismo
2006 Maserati MC12 Corsa
2008 Mitsubishi Lancer Evolution X
2007 Peugeot IRC Peugeot Sport España 207 Super 2000
2008 Porsche 911 GT2 (997)