Never let anyone else drive your/my car ; for obvious reasons

 Never let anyone else drive your/my car 

Driving your car is not a video game. You are driving a death machine.

Driving your car is not a video game. You are driving a death machine.
Slow down. Think. Be patient.

Imagine drivers that are tired,
fighing with someone in the car,
dealling with kids throwing tantrums,
are drunk, on prescription drugs, have a lot on their mind,
are in a hurry (impatient), distracted by cell phones or are
ill/sick with the flu, a cold or any other imaginable sickness.

If you imagine these possibilites you are more alert
and able to respond quickly and calmly to sudden changes in traffic.