Some of the hottest drag performers in Las Vegas take over Craig's van to help contestants win cash playing karaoke games.

Christina Milian hops in the van to help karaoke contestants choreograph a win.

Howie Mandel and a horde of Elvis impersonators make a special appearance to help karaoke teams make it to the finals.

Unsuspecting riders get the surprise assistance from a barbershop quartet; Adam Carolla shares a backseat with three excited nurses.

Anthony Anderson shows off his Italian opera skills for unsuspecting riders.

Craig picks up a Dolly Parton impersonator who fools everybody; three teachers prove they're not that innocent.

Basketball star Nick Young (aka Swaggy P) gives passengers an assist; at the showdown, top contestants jam out with Craig's band, The Nasty Delicious.

Craig gets a van full of firemen; Boyz II Men help one team win big.

The contestants get physical with Blue Man Group in Las Vegas.

Craig Robinson picks up unsuspecting passengers to play karaoke games for money, including a pair of Chippendale dancers; DJ Steve Aoki joins for a mashup-inspired game that leaves one passenger messy.