Gran Turismo 5 Prologue Unlockable: Concept Cars
To unlock the concept cars below, you must complete all races in the class listed with at least a bronze medal (or higher).

A Class - '07 Nissan Skyline Coupe Concept
B Class - '07 BMW Concept 1 Series
C Class - '07 Daihatsu OFC-1
S Class - '07 Nissan GT-R Prototype

必须在每条赛道至少铜牌！