Crazy Taxi 2 cheats and cheat codes for Dreamcast

No arrow indicator
Just before the driver selection screen appears, hold Start and press A.
If the code is accepted, you should see the message "No Arrows" in the 
left corner of the screen.

No destination indicator
Just before the driver selection screen appears, hold Y and press A. 
If the code is accepted, you should see the message "No Destination Mark"
in the left corner of the screen.

Enable Expert mode
Just before the driver selection screen appears, hold Start + Y and press A. 
If the code is accepted, you should see the message "Expert"
in the left corner of the screen. There is no any kind of indicator
in this mode.

Unlock Apple map
Finish the following minigames in Crazy Pyramid mode: 5-1, 5-2, 5-3, 5-4, 5-5

Unlock Small Apple map
Finish the following minigames in Crazy Pyramid mode: 4-1, 4-2, 4-3, 4-4

Unlock Push bike
Finish the following minigames in Crazy Pyramid mode: 3-1, 3-2, 3-3

Unlock Baby stroller
Finish the following minigames in Crazy Pyramid mode: 2-1, 2-2

Unlock 4 original characters
Finish the following minigames in Crazy Pyramid mode: S-S at the 6th row