Mrs LS was pushing a heavy shopping trolley up the slope of Morrisons car park this morning and a car immediately behind her blew it's horn. She nearly jumped out of her skin as she had no idea that it was there. I thought that when electric cars were in their infancy, there was talk of them having an artificial engine noise. It's happened to me twice when walking in the lane, as 2 of the neighbours have bought electric cars. I think that they're dangerous without a warning device, particularly for the dard of hearing.