We live and learn, but it’s extraordinary to reflect on the fact that it was a mere 20 years ago that the UK government sought to end the practice of offering company car drivers tax discounts if they used their cars for more than 2500 business miles (earning a one-third discount) or more than 18,000 miles (two-thirds).

Back then, it was well known that some drivers on the cusp of a tax break would take to the roads to earn it. Never mind the planet, a few laps of the M25 could save them big chunks of cash – which was probably spent on a holiday that threw a few more tonnes of CO2 into the atmosphere…