(15 Dec 2021, 12:05 am)idiot wrote Why are gas buses a failure.?

Lack of any future orders, can't really say whether they will at Sunderland but long term it suggests it's a one time thing. Maybe they will at Sunderland but who knows yet. 

Darlington have already bought Diesel buses instead (Streetlites in 2017).

Then again I don't believe a single clean bus has been bought outright up here, unsure on the second batch of Yutongs coming.