Cars and motorbikes often follow similar trends. BMX started out on dirt tracks. But the scene has since moved on, with BMX fans taking over cities and trading dirt tracks for neat and tidy half-pipes.Off-roaders have gone through a similar transformation. They're now called "SUVs", and a growing number of drivers now buy them chiefly for the city. Drive it! puts the new VW Tiguan through its paces on and off the roads.