I went to California to sell my gin to Americans and dropped in on Jay Leno. He gave me a tour of his garage and I asked the vital questions – such as: “Where can I buy the best burger in LA?”, “How fast is your 1000bhp Rolls Royce?”, “Why put a helicopter engine in a motorbike?”, “Will your jet car run on my gin?”, “Will electric cars save the internal combustion engine?” and, most importantly, “Who dusts all this stuff?”