Reality TV stars! Functionaries in non-democratic regimes! Footballers! Yearn for some space and privacy for those arduous journeys between book signings and tattoo appointments? Need something to terrorise the outside lane of motorways to get between social engagements more quickly? Look no further - Brabus has turned the fastest vehicle on British motorways into a luxurious private jet for the road.

Yep, the Mercedes Sprinter has been Brabussed, and it's as OTT as you'd hope from a company that thinks a six-wheeled G-Wagen is too understated as standard.

So what does the Brabus Business Lounge (such a glamorous moniker) offer famous folk seeking some solace? On the outside, it looks like a Sprinter that's been driven headlong through a modifying workshop, with a set of 18-inch alloy wheels, LED running lights and some shiny chrome across the grille.

It's the inside that really matters, of course. And here is where you can let your imagination and options box-ticking hand go wild. Brabus's Moscow motor show display van showed off a particularly plush six-seat layout, with four main seats supplemented by a further two in a third row, for less important hangers-on.

The four posh seats are packed with a plethora of functions - heating, ventilation, massaging - and can recline into a sleeping position, too. All kinds of leather and Alcantara trim combinations are available, while there are electrically retracting tables. There's a definite whiff of airline business class about it all.

Other features of note are the wood flooring, a fridge and coffee maker and a ceiling boasting 2700 LEDs, which can display all manner of things from a starry sky to a fireworks display, or the slightly more erroneous-sounding 'psychedelic themes'.

Perhaps more useful is the 42-inch screen, which is part of a wealthy connectivity package that includes high-speed internet, a Blu-Ray player and a PlayStation 4, as well as exterior cameras to assess how many disgruntled 320d and A4 S-line drivers have been swept aside on the M1.

As with all Brabus products, it's all about customisation, so pricing depends on just how little self-control you have come order time. We'll have ours with an 850hp Biturbo V8, please.