How many Twins can you have? That’s not a trick question: Adria is offering its van conversions of that name in three layouts for 2019, all in range-topping Supreme spec. 

So there’s two 640 models based on the extra-long Fiat Ducato: the rear transverse double bed SPX, and this, the SLB, offering two single beds at the back. 

Both 640s can be had in Plus format, and only the 6m-long 600 SP is offered at Axess budget level. 

Van conversions are where it’s at for 2019. You’ll want to get out there and find what’s best for you and your budget – and, if fixed single beds are your thing, this SLB will make a good yardstick.