Fold-up bicycles have always been an unreliable option, mainly due to the fact that the designs prior to the Swissbike haven't really been of use to the majority of the requirements. Only a select few have offered a combination of full-size performance and fold-up convenience. The SwissBike, a civilian spin-off of a platform first developed for use in military transport and parachute airdrop by Massachusetts based bicycle manufacturer Montague Corporation. The range is headed-up by the flagship SwissBike XO - a full size mountain bike with 26" wheels that folds down to a 36" x 28" x 12" size in under 30 seconds via a quick-release system that doesn't require tools. The company's patented FIT (Foldable Integrated Technology) System which facilitates the quick-folding without breaking any of the frame tubes is the key to maintaining the structural integrity of the bike. The bikes also include the CLIX Wheel Retention System which enables one-handed wheel removal and importantly, a safety lock system which prevents frame from folding even if the quick release isn't tightened.
The top of the line, 27-speed, USD$2,250 XO model include a frame constructed from custom drawn 7005 aircraft grade aluminum tubing, hand-welded, double butted rear triangle and Rockshox Recon 351 Suspension with 85-130 travel and disc mount. Alloy rims, CST Maxis Flyweight Kevlar tires, Sram derailleurs and double butted alloy handlebars are also standard issue on the XO. The range is completed by the USD $865 LX and the USD$679 TX models with clever folding pedals and a soft-carry case available for all models.
Source
http://www.newlaunches.com/archives/swissbike_a_fold_able_work_of_art.php