Is his son in his 60's?One of our Submariners Association members, Dennis, ex WW2 Submariner, is around 86 years old now and a great character, he has an electric chariot. Dennis lives in a fairly remote village and decided to go for a ride on the chariot. His son gets a phone call from Dennis telling him he's run out of go juice in a remote area and needs a lift. Son spends an hour searching and ringing Dennis without success. when he eventually contacts him, He's told not to worry as Dennis is back home having got a lift with a passing car. Dennis of course had forgotten to let his son know that he was home safe and well.
Hopefully I won't be requiring the use of anything like that anytime soon, but with a two for the price of one 8 to 10 hour back operation looming soon, I'll get one of these in a heart-beat!