Let's see here the steering wheel that Sebastian Vettel used to steer his Red Bull-Renault RB8 to his third World Championship in 2012.
The steering wheels of the F1 cars are all hand made from exotic materials such as carbon fibre, aliminium, magnesium, titanium and they contain hundreds of tiny electronic components to make adjutments to the car, engine and gearbox.
There are buttons for the KERS, the Kinetic Energy Recovery System and the DRS, Drag Reduction System along with the usual array of toggles, switches and levers.
DIF Adjust the behaviour of the differential
N Puts gearbox into neutral
RADIO Push to talk to the team
X Sets a marker in the telemetry to indicate a problem is encountered.
DRINK Push to drink
DEFAULT Reset certain settings to their original values
TYRE Driver adjust this knob to tell the team about the tires and adjust electronics to suit different tires
KERS Select KERS settings
CLUTCH Select clutch adjustment
MIX Change engine's mixture settings
FW. EN Tells the team if there's a need to change front flaps angle
REV Allow more engine revs to pass another car
OIL Activates supplementary oil tank for engine
OK Driver acknowledge if radio does not work
FAIL Command all systems into a fail-safe mode just to get the car going again
PIT Activate speed limiter in the pit lane
TRO Change throttle pedal map
*The functions of the buttons and switches are estimates.