The actor doing the voice over in the National Car Rental commercials is:
Patrick Stewart has been doing the voice over for the National Car Rental commercials for several years. Stewart is known for his roles in movies, television and theatre. Patrick played Charles Xavier (Professor X) in the X-Men movies, as well as Picard in Star Trek: Generations. In television Patrick Stewart has played captain Jean-Luc Picard in Star Trek: The Next Generation in addition to Avery Bullock in American Dad.