The days of flat tires and spares are numbered. Sure, self-inflating tires are all well and good, but don't protect from the darn puncture itself. Similar to Michelin's tweels, Bridgestone has cooked up some air-free concept tires that use a use a tough but flexible thermoplastic structure that behaves like a normal tire with nary any horizontal force produced. Each wheel is able to support around 150kg, although on a typical electric mobility scooter the load is more likely to approach 50kg.
Engadget, Bridgestone rolls with air-free tire concept (video)
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