Seashell-mimetic ceramic-polymer composites: https://escholarship.org/content/qt81h4g1f5/qt81h4g1f5.pdf https://escholarship.org/content/qt81h4g1f5/qt81h4g1f5.

Seashell-mimetic ceramic-polymer composites: https://escholarship.org/content/qt81h4g1f5/qt81h4g1f5.pdf https://escholarship.org/content/qt81h4g1f5/qt81h4g1f5.pdf On a less quixotic note, electric buses, particularly dual-mode trolleybuses that never stop to refuel. They're slowly appearing but less exciting than electric cars apparently.