Of the many dubious bits of driving I have witnessed, my probable favourite was driving behind an old couple in little a old car..
Picture the scene..
Man driving, wife, presumably, passenger. As the car started meandering towards the kerb, she reaches over & steers it back towards the centre of the lane. Car then weaves towards the white lines.. Helpful as ever, the missus leans over again & corrects the direction of travel.
As there was a roundabout about a mile up the road I had the time & opportunity to overtake as I didn't want to be a witness when they got to said roundabout 🤦♂️
I sat and ate my lunch in Athlone earlier this year after cycling the Greenway, and observed probably the worst driving I ever seen as a really elderly couple tried to parallel park a Ford Ka alongside the kerb.
First he had a go with her dictating. He gave up with the car mostly about 5' away from the kerb. She had a go and made a complete dogs dinner of it as well. Then he had another attempt without success. Then they had an argument.
All the while, passing traffic had stopped to give them space to continue their manoeuvre. They eventually left with most of the car sticking out into the traffic lane.
If I had filmed it all and speeded it up, added a bit of music, it would have made a good Benny Hill sketch!
I felt sorry for them, but neither should really be driving as they had no judgement of the car whatsoever. The space was more than adequate for a small car.