The swivel-head folding bike designed by Mark Sanders features full-sized wheels and can be folded in just 12 seconds. It can also be rolled without having to lug by the frame or saddle. A 4-bar link is used on the bike, which can automatically guides the wheels together during a single fold action. Mark Sanders, the designer of the Strida bike said that the link bars are integral parts of the frame, and in riding mode are tensioned “giving tremendous rigidity and strength”. Video demonstration

[via Techeblog]