In addition to the brand's X3 electric trolley, Stewart will be taking the ground-breaking F1 Lithium to Munich. Apparently nothing to do with Formula One racing (although the trolley's appearance suggests otherwise), the F1 is so-called because it became known as the ‘folding one' during development. It folds in half in a single motion, comes with magnesium alloy wheels, electronics derived from NASA, it weighs 14kg with the battery and has its own customised golf bag. Oh, and a price tag of £2,500.