Leonard Nimoy, Zachary Quinto pair up for Audi ad: 'Spock vs. Spock'

In a two-and-a-half minute long commercial for Audi, Leonard Nemoy and Zachary Quinto face off as old Spock and new Spock in a race to the golf course. The Spock-off features a few key "Star Trek" references for big-time fans, including a scene where Nimoy sings his delightfully off-key "Ballad of Bilbo Baggins."

Nimoy and Quinto previously got together for a scene in J.J. Abrams first "Star Trek" film. Quinto stars in its follow-up, "Star Trek Into Darkness," out May 17.