BIKOFF is a folding bike with a built-in briefcase designed by Marcos MadiaThe Bikoff was a finalist in the Seoul Cycle Design competition, but is currently just a concept. The designer made the fancy carbon fiber briefcase an essential element of his Bikoff bike concept’s structure, adding stiffness to what would otherwise be a very flexible frame design. You don’t have to carry any bags, because this folding bike has the briefcase.