Indeed at the time none of us spoke either French or Spanish. However we did have a list of useful phrases for the traveller supplied by the auto club along with the route maps. One of these phrases became the immortal “Trente litres d`essance s`il vous plait.” The list of useful phrases did not supply any variations on this request, so we were obliged to order ‘thirty litres of petrol please’ any time we needed fuel.

The height of the roof rack and heavy load on board made the car slightly less fuel efficient and aerodynamic than The Houses of Parliament. Our fuel consumption was roughly the same as a badly maintained Concorde passenger jet, so we ended up visiting practically every other petrol station between Calais and Barcelona asking for {you guessed it}, thirty litres of petrol please.

This slowed us down a bit but at least it gave us the chance to exchange places in the back at fairly regular intervals.

We tried to fill up on fuel only at Total and Elf service stations because they had free gifts with every fuel purchase. By the time we returned to England we had a complete set of miniature plastic busts of famous French writers, artists and composers, courtesy of Total. Courtesy of Elf, we had enough high ball glass tumblers to kit out one of the Queens garden parties. I am sorry Shell; your freebies were rubbish.

By late morning we had reached the outskirts of Paris. I was disappointed that we would not be able to spend any time here, and hoped at least for a glimpse of the Eiffel tower on the way past. The route map recommended going around Paris on a big ring road known as the Peripherique. It indicated where we would join the Peripherique and the best place to leave it to continue our journey south.

It didn’t indicate that this was the most dangerous place on earth. The road to hell. No diversions. I suggest anybody forced to use this horror of a bypass would be well advised to take a large dose of LSD at the last toll booth before Paris – the nightmare of a bad trip could be no worse than the terrors of driving on this evil stretch of tarmac.

It has been suggested that the chariot race in Ben Hur was based on a movie mogul’s abortive attempt to circumnavigate Paris at rush hour.

The Peripherique is many laned. Cars drive flat out at all times. They drive so close to one another that direction indicators are useless. To signal your intentions to other road users the custom is to blare your horn repeatedly then just execute the manoeuvre, change lane or whatever, even if it is against the laws of Physics to be able to get your car into the available space. French drivers don’t have a lot of time for the laws of physics. So far as I can tell French drivers have heard of the Highway Code, but don’t believe it has a significant role to play in the day to day life of La Republique. Basically a nice idea but not very practical if you want to get to work on time.

We were approaching the highway with great trepidation. It did not seem possible for us to slot into the traffic flow, so tightly was it packed. We were lucky, you might say. The coach directly in front of us just threw himself off the slip road on to the main highway, forcing several cars to swerve or brake hard. Amid a cacophony of angry car horns we slid into the gap. Dad swallowed a handful of caffeine tablets, clearly uncomfortable with what was happening around us.

Soon we came upon another approach road. Traffic joining our lane at high speed, uncaring that our family was actually already in the space they wanted to occupy. Dad was forced to swerve into a faster lane accompanied by more blaring car horns.