 Guests have included Mayor of Las Vegas Oscar Goodman, comedian David Brenner, the band Neon Trees and magicians Penn & Teller.The prizes are sometimes doubled in a "Double Down Ride", as on the regular show.On December 4, 2017, Discovery aired a special Celebrity Edition, where as the unsuspecting passengers hailed the Cash Cab, they were joined by celebrities to help them, featuring "" actor Scott Bakula, actor & comedian Gilbert Gottfried, and "Friends" actor Matthew Perry.