Heat Kills! Dogs Die In 15 Minutes!

Yes that's right.  It takes just 15 minutes for a dog to die in a hot car.  The death is excruciatingly painful. Liken it to being put in an oven and left to bake.  Why is this still a common occurrence?
 
Here in the UK there has been a couple of very sad incidents where police dogs have perished in the back of police cars.  The policemen that were responsible were suitably devastated, but I still don't understand how they could have been left in the first place?

These atrocities must stop! What would you do if you saw a dog in distress?  I suppose the first thing would be to contact the police and hope they arrive in time.....but what if it was a desperate situation?  Well I for one couldn't just stand back and allow the animal to suffer......