It was over thirty years ago that Volkswagen first started offering "pop tops" on its camper vans. In the years since, the soft-sided interior height-extenders have become a common sight on VW vans parked in campgrounds all over the world. Now, Welsh company Overlander Motorhomes is offering what it sees as the logical compliment to the pop top - it's the DoubleBack, a sliding insulated pod that extends the interior length of Volkwagen's T5 Transporter van.
