You couldn't make it up.

Motorist driving along starts feeling ill, so he pulls up on some waste ground for a breath of air.  He is approached by a clamper, and is explaining why he has stopped when he collapses.  The clamper rings 999 on his mobile and the paramedics turn up. They call for an ambulance and the driver is taken to hospital.  You can guess where this is going can't you?  After the ambulance leaves, the clamper clamps the car!!