Tidbit: Flixbus, the origins of FlixMobility which bought Greyhound tried the BYD C9 bus on the Mannheim - Frankfurt route in 2018-2019.

They stopped because of re-occurring partially multi-day outages due to battery issues, which were LiFePo. The press coverage is vague, but explicit in mentioning battery issues.

I assume that tesla did their due diligence and BYD fixed the issues by now.