As a member of a Rescue Station, we get responded on average to 5 or 6 of these over the summer months, most are accidental lock-in's, but even after all the warnings we still get the FuWit who don't care and leave their kids in the car for the 5-10min run into shops. we don't stuff around, a window gone within 20-30sec of steeping of the truck in most cases.
And Yes here in NSW if you lock your child in the car and it's not accidental, 99.9% of the time they are charged