Question: Which American computer animated road-comedy-adventure film is Bolt  based on 
Sentence (from "Bolt (2008 film)"): Directed by Chris Williams and Byron Howard, the film stars the voices of John Travolta, Miley Cyrus, Malcolm McDowell, Diedrich Bader, Nick Swardson, Greg Germann, Susie Essman and Mark Walton.
Relevant evidence: No