Drivers

The cabbies are these:

CT1, CT2 (when completing Crazy Pyramid), CT3 Axel

CT1, CT2 (when completing Crazy Pyramid), CT3  B.D. Joe (Black Dude Joe)

CT1, CT2 (when completing Crazy Pyramid), CT3  Gena

CT1, CT2 (when completing Crazy Pyramid), CT3  Gus

CT1, CT2, CT3  Slash

CT1, CT2, CT3  Iceman

CT1, CT2, CT3  Cinnamon

CT1, CT2, CT3  Hot-D

CT1, CT2, CT3  Angel

CT1, CT2, CT3  Bixbite

CT1, CT2, CT3  Mrs Venus

CT1, CT2, CT3  Zax

In Crazy Taxi 3, all of these can be chosen on any map, given that you've completed Crazy X.