I think regenerating, or capturing energy, typically lost through friction can have huge impacts, especially for electric cars. If the retrieved power can be re-distributed back to the fuel cell/battery, that's quite a boost in range/efficiency.

And where might this technology lead in the future? Today, it might be 10% we can find back, tomorrow 15%. As the tech gets better, and possibly in combination with other solar power too, we might even see vehicles which can run 10x, 100x the distance as current models.

Couple that with advances in fuel cells, and battery storage, and the electric cars of tomorrow might never need charging - or in less sunny climates, very infrequently. That will see one of the obstacles to adoption disappear - the difficulty in finding/using charging stations.

Great find & very promising tech.