claim: The Nice Guys stars Shane Black.
evidence: Perry Kramer -LRB- born October 6 , 1959 in Santa Monica , California U.S. -RRB- is a former American `` Old School '' professional Bicycle Motocross -LRB- BMX -RRB- racer whose prime competitive years were from 1974-1981 .. Among his accomplishments is his co-founding with Scot Breithaupt of Scot Enterprise Racing -LRB- SE Racing -RRB- .. Scot Breithaupt. Scot Breithaupt. His nickname `` PK '' is a simple derivation from his first and last initials of his name and the inspiration of one of the most popular model of BMX bicycle , the `` PK Ripper '' , that is still in production .