Mr Wilkins said Mrs Bhogal switched on her hazard lights and saw the defendant's lorry coming from behind with its headlights on.

BBC: Priyanka Bhogal

At the same time, windows and the sunroof are automatically closed, seat belts are tightened and your hazard lights go on, Audi explains.

FORBES: Audi May Tempt Buyers With Tech

If the trucks go off their set course, the horn sounds, hazard lights are activated and eventually, the truck will come to a standstill.

CNN: Singapore boosts security with tech

The 1993 Nissan Pathfinder was left with its engine running and hazard lights flashing in Times Square on Saturday evening - when the square was packed with tourists and theatregoers.

BBC: US tightens security after Times Square bomb plot