A severe mental disability in which sufferers chronically experience acute anxiety attacks related to the welfare of their vehicles. A typical vehicular hypochondriac may face bouts of depression and paranoia stemming from the false belief that his/her car is malfunctioning when it is in fact operating in perfect order.
Sane Human Being: Why are you giving away all of your earthly possessions and digging a large hole in the ground in front of a tombstone with your name on it?
Vehicular Hypochondriac: Well, my check engine light came on today. I'm going to die.