By Tim Pitt Last week, HMRC pulled the rug out from underneath the UK pick-up market, closing a loophole that classed double-cab trucks as commercial vehicles. This week, that decision was reversed, meaning business users can still save thousands in VAT and benefit-in-kind (BIK) tax by choosing a pick-up as a family car. Whatever the government decides to do next week, spending £50,999 plus VAT on the Isuzu D-Max AT35 is hard to justify in cold financial terms. Frankly, this fully-loaded expedition vehicle seems a tad overqualified for the school run. The ‘AT’ here stands for Arctic Trucks, th…