Drove home from the Lakes yesterday - stopped at Knutsford services for a coffee. Woman in the car next to us smoked 2 cigarettes whilst we were there - just threw them away when she had finished them - did not even bother to put them out. There was a clearly visible bin about 20 yards away. Later, stop-start traffic where the M6 joins the A14/M1 - area of grass on the right covered in litter - people clearly took the "opportunity" of moving slowly to empty the car of rubbish. What do we do?