Agnès Poulbot and Jacques Barraud† (FR)
Auto-regenerating tyre tread

About the invention

These two French tyre experts at Michelin developed truck tyres that last 20% longer and save one litre of fuel every 100km. How? By layering shallower tyre treads on top of each other, so that as one tread wears out, a fresh one is revealed.

More details on www.epo.org