Partially or fully caternary-free trams that utilise supercapacitors are already deployed in some cities like Guangzhou, China and Zaragoza, Spain. It is probab

Partially or fully caternary-free trams that utilise supercapacitors are already deployed in some cities like Guangzhou, China and Zaragoza, Spain. It is probably not too much of a stretch to extend this concept to trolleybuses. Like the trams, they can use charge points at stops either overhead or embedded in the roadway.