I've come across several cases of 'motorist knee' in recent months, mainly in passengers. Motorists knee is a very painful condition that is caused by wrongly stepping out of the car using one foot and then standing up, pulling the other leg out of the car. The knee is then put under torsion and it was not designed for that. Several people I know have gone to the doctor and had knee Xrays and been put on painkillers. I told them to turn in the seat and put both feet on the ground before standing up. After a couple of weeks the ailment is cured.