Did you realise that your A3 has police car lights built in!!
I had my fogs on tonight as it was rather foggy down this part of the country and when I pulled up to the house switched them all off by turning the knob and when I turned the sidelights off the fog lights came back on when the knob is pulled out... Looks very similat to a police car!!
I reckon you'd probably get arrested using them though!!!