Rubber

A rich young girl finds that she has developed a passion for the smell of burning rubber. So she buys herself a sports car and satisfies her passion racing around country lanes. One day she passes a young man who is hitch-hiking and stops to pick him up. The hitch-hiker settles back in his seat, thinking that his luck has really changed.
Suddenly the girl stamps her foot on the accelerator and drives full speed towards a steep cliff. At the last minute she puts her foot on the brakes and the car stops inches from the edge.
"Can you smell that?" she asks her passenger enthusiastically.
"Smell it?" sobs the man. "I'm sitting in it!"