Activate the following cheats by entering the corresponding codes at the driver/car selection screen:

CHEAT FUNCTION - CHEAT CODE
No destination marks or standard view - CTRL + ALT + SHIFT + F5
No arrows or flyby view - CTRL + ALT + SHIFT + F6
Expert mode - CTRL + ALT + SHIFT + F7
Another Day level or windshield view - CTRL + ALT + SHIFT + F8
Bike taxi or toggle speedometer - CTRL + ALT + SHIFT + F9
Reset system during game - CTRL + ALT + SHIFT + F2