The numbers game, or "how high can we go?"

[Happyhungryhippo]

There was a german early 70s copy called “Dudu”.

[Fayeding_Spray]

54

[Maverick74]

Alfa Romeo 1(55)

[Mad_Cat]

MG/Austin ADO56 prototype

[Elizipeazie]

Bugatty Type 57

[Knugcab]

58

[Fayeding_Spray]

59 (McRae GM-1 Formula 5000)

[Danicoptero]

Volvo s60

[Knugcab]

Toyota Starlet KP61

[Fayeding_Spray]

(Brabham BT)62

[LS_Swapped_Rx-7]

(Lamborghini Aventador SVJ) 63

[happyfireballman]

64 valves

[abg7]

Mercedes-AMG SL65 Black Series (R230)

[Edsel]

DAF 66

[Fayeding_Spray]

67

[Mad_Cat]

Bugatti Type 68

[Knugcab]

69

[Danicoptero]

Lola T70 mk2

[IncredibleHondaFit]

(P)71

[Knugcab]

Audi 72 (yes it was a model name that existed on the first gen postwar Audis)