Adapted from their beloved comedy show at Upright Citizens Brigade, Crash Test showcases Rob Huebel and Paul Scheer on a state-of-the-art party bus adventure, picking up famous comedians and celebrities as they go on a sightseeing tour of Los Angeles. Ben Stiller, Stuart Cornfeld and Mike Rosenstein of Red Hour executive produced the special.
| Actor | Role |
|---|---|
 Paul ScheerSelf | Self |
 Rob HuebelSelf | Self |
 Aziz AnsariNot Aziz Ansari | Not Aziz Ansari |
 Aubrey PlazaSelf | Self |
 Rob CorddrySelf | Self |
 Andy DalyThe Voice of Busey | The Voice of Busey |
 Robert Ben GarantStudio Security | Studio Security |
 Natasha LeggeroSelf | Self |
 Thomas LennonStudio Security | Studio Security |
 Jack McBrayerSelf | Self |
 Seth MorrisBob Ducca | Bob Ducca |
 Earl SweatshirtSelf | Self |
 Ian KarmelSelf | Self |
 Steven BanksBilly the Mime | Billy the Mime |
 Eric BauzaAnnouncer | Announcer |