IMMENSELY USEFUL. INCREDIBLY SMALL. The GSD is designed to carry 2 children, provide a week's supply of food, or take a large load of weight and all this at a length of only 180cm - just as long as a standard e-bike. With Tern's industry-leading folding technology, it's so compact it fits into a VW Touran or an urban home. It also adapts to riders from 150 - 195 cm - so Mom, Dad and the children can share it.