You’ve probably heard the saying about the rich getting richer and the poor getting poorer. Well, according to most analysts, it’s true.

One estimate suggests that today there are 211,275 people on the planet who can be categorised as ultra-rich, with a net worth of $20-$100 million (to be rich you need $4-$20 million). Combined, they have an estimated worth of £30 trillion.

But it’s estimated that by 2019 there will be 250,000 people in the same ultra-rich class, worth a combined $40 trillion. That’s a lot of people with a lot of money.

What does this mean for the car industry? That the pickings at the top end are going to get bigger - and that is one explanation for why Mercedes has revitalised its top-end Maybach nameplate for what will become a series of vehicles aimed at the super-wealthy.