Board Thread:Game Discussion/@comment-28118599-20160512014956/@comment-26249703-20160512075918

You can if you buy the R8 LMS ultra, Viper ACR-X or M3 GT2 ALMS from another series. The easiest way to do that is by having one a car featured in series they're featured in, which would have unlocked them, there, then buying them. The 918 isn't too expensive and is useful, so it won't be a huge waste if you buy it without discount, still.