1 line 1 class
(X)=how many car

Cover Wheel
(2)K-Car Class--UF1,RWD K Car(Smart Roadster)
(3)Class C--XFG,XRG,Smart Roadster BurBrash
(4)Class B--XRT,RB4(Turbo Bar↑),FXO(Flat 4>>inline 4 & 4door),LX4
(4-5)Class A--FZ5,RAC,LX6,Group N Rally Car(EVO\206...etc)
(4-5)Super Touring--V8 Supercar,NASCAR,Group A Rally Car(WRX\Xsara...etc),FXR(4WD>>FR & 4door)
(4)Cup Car--UFR,XFR,XR Cup(XRR with no turbo),LX8(or LX Cup)
(4)Super Sports(how to said this type...)--Hilltop RAZAR P1,Ariel Atom II,Lotus circuitcar,Venturi Fetish(EP CAR !!! )
(3)GT2--XRR,RB4 GTR, DTM Car
(3)GT1--FZR,LX GTR,RAC GTR
(1)LMP Car(P1)
(1)LMP Car(P2)
(1)Racing Truck
hold:30-32
Maybe we can changh DTM & FXR

Open Wheel
(2)Go-Kart--125CC Water Cooler,Formula Zero(EP Kart)
(1)Formula Student--MRT
(1)No wing Formula
(1-2)FOX>>Formula Geely and/or Formula MAZAD
(1)FO8>>A1GP
(2)BF1>>BF1 & Champ Car
hold:8-9

All:38-41

Maybe it is too many

+ more:
(1)Classis F1
(3)BF1--BF1,Champ Car,A1GP 2007(750ps)