npub13u8mngerjwr9fdj0u5dlzgf4jnv8d9pdag3rydx7p754axpa5z0quvku4z (npub13u8…ku4z) we have completely evaded answering that question by simply borrowing the English word, it appears...
https://no.wikipedia.org/wiki/Trolleybuss
to be honest with you, previously lacking the knowledge that "trikk" is from "elekTRIKK", i would have translated that as "trikkebuss".
further confusing the matter: many buses ARE now electric...