Memories!

Do you think that these new-fangled electric cars have an AA battery under the bonnet as a reserve?

My son has a electric car, he had his family out for the day and when heading back home he was driving up the coast, with the intension of stopping of at Girvan, but when he got there he discovered that the car chargers were out of order so rather than risk running out of charge before getting home he couldn't wait, so evedently there are no AA reserve batteries, also makes me wonder what do you do if you runn out of charge? with a normal fuel driven car you can get a can of petrol or diesel, but you can't get a can of electricity