Folding bikes have been around for ages now, with the likes of UK folding bike brand Brompton starting out way back in 1981. While Bromptons have 16-inch wheels, the new Tuck Bike - that has just been launched on Kickstarter(link is external) - has full-sized wheels but still manages to fit into small spaces, as those wheels can be folded into thirds.

“[It’s] a full size bike that fits under your desk and is fun to ride whether you fold it or not,” say the Tuck Bike LLC team.
No tools are needed to fold the bike away, and there are three different folding options to choose from depending on whether saving time or saving space is more important.
The 'Curtsy' is the quickest option and best for temporarily storing the bike in a narrow hallway, for example - just fold down the handlebars.

The 'Quickie' is the half fold, and this can be done in five seconds flat according to Tuck Bike. It reckons this is best suited to those rushing to catch a busy train.

Finally there is the 'Full Monty Fold' which, according to Tuck Bike, can be achieved in less than two minutes. This is the method that folds the wheels away into thirds, and then these are tucked inside the frame.

Tiny castor wheels are also attached to make it easy to transport the bike around when it’s folded away; the Tuck Bike can be rolled along as you walk about at your destination. Magnets should also hold the folded frame together.
How compact?
The most compact fold measures 26 x 16 x 34 inches (65 x 40 x 86cm), which is small enough to fit into the boot of a compact car, such as the Chevy Bolt hatchback pictured above, and also under the desk at the office.

Tuck Bike acknowledges that you can get a small-wheeled folding bike that’ll fold up smaller, but with its offering you still get a compact bike that rides like a full-size urban bike.