This happened two weeks back, at our local busy school drop off.
I walked passed a parked up car, with its drivers door open & engine still running, with a baby latched into its rear seat with no sign of the driver or another adult about!
Stopped, and asked other parents near to see if new the owner?
Told by another parent, it was a known parent dropping her other kid off at school!
The car was parked some 100 yards away from the school entrance, out of view of the car!
So we waited by the car (with another parent).
Mother came back, fag in one hand, phone in the other, got into her car, totally blanked us, still smoking and on the phone pulled out and drove off, did I mention no seatbelt?
Words failed me!
Some days you just wish there was a PC about 😯