From Forbes.com by Parmy Olsen

A British engineer has come up with a collapsible wheel.

Duncan Fitzsimons is a tinkerer.

Standing in his London workshop, Fitzsimons picks up the bicycle wheel he designed and pushes on the sides. In one smooth movement it collapses, inflated tire and all, into an oblong shape the length and width of a skateboard. After three years of modifications and scores of prototypes Fitzsimons has come up with the world’s first collapsible bike wheel, aimed at couriers or commuters who might need to throw a folding bike into a trunk or overhead compartment.

This wheel would put a new dimension to folding bikes. No longer will the wheels pose a problem to travel. Read the full article for more information on how these wheels would work.