1st case - keyboard
Arrows
= ride
CTRL
= shoot
x
= rockets
SHIFT
= nitro (if available)
c
= camera
SPACE
= handbrake/respawn
ESC
= escape

2nd case - mouse + keyboard
 
= ride
Mouse
= shoot/rockets
SHIFT
= nitro (if available)
c
= camera
SPACE
= handbrake
ESC
= escape

ENTER
= chat
Note: please avoid pressing shortcut ctrl + w closing the game tab.