Who doesn't like trampolines? An architectural firm has developed a prototype for a commuting sidewalk, which is essentially a long trampoline. The concept, dubbed ‘Fast Track’ is the brainchild of Salto Architects. The designers state that “Fast track” challenges the concept of infrastructure that only focuses on technical and functional aspects. The company built the trampoline path, which stretched across a field, for a Russian festival, held earlier this year.