Imho all should have been saved by buying China's ones instead, with full availabilities
Literally none of the buses were still roadworthy within a year.
It turns out we weren't the only transportation agency to make that mistake; every American transportation agency that has purchased BYD vehicles has terminated its contract with BYD and most agencies are seeking refunds for failure to deliver under contract.
https://www.thetransitwire.com/2018/05/22/problems-plague-by...
https://www.cnbc.com/2020/09/30/warren-buffett-backed-byd-st...