I put this one in because I realised how reliant I have become on the old sat nav. I frequently arrive somewhere with no idea how I got there, where I am or how I am going to get home! If the thing packed up half way through a journey I would be scuppered.

And also, it is a shame to lose the old fashioned skills – manoeuvring through fast-moving traffic, map in one hand, steering wheel in the other, handwritten page of directions floating about somewhere in the passenger foot well… Ah yes, that’s what it was all about. And for optional added spice, I tried it with almost zero diesel in the tank and no button to press to find a route to the nearest fuel.

Happily all turned out well. In truth I confess I did not penetrate very far into London, but it will have to do – 77 more challenges on the list! Onwards and upwards!