Trolleybuses don't need tracks, they just need overhead cables. We use them in Vancouver. https://en.m.wikipedia.org/wiki/Trolley_buses_in_Vancouver https://en

Trolleybuses don't need tracks, they just need overhead cables. We use them in Vancouver. https://en.m.wikipedia.org/wiki/Trolley_buses_in_Vancouver https://en.m.wikipedia.org/wiki/Trolley_buses_in_Vancouver