Early adopting of tech has problems but someone has to get there first.
Maybe they need to look at their system for maintaining and repairing and work with whoever provided the buses to find solutions.
It's a shame that there are problems and hope they don't give up on the idea because of such issues. Like Treebeard mentioned, early adoption of innovative tech will come at a cost
You have to hope that they will just stick with it and overcome the problems. If it was a big expense in the first place then just abandoning it would probably be a bigger waste then finding a way to solve the problems and make it work more smoothly in the future.