I'm sitting in a battery-electric bus from New Flyer this very minute. BYD is hardly the only bus OEM around

There are _loads_ of electric bus manufacturers; many of the big incumbent manufacturers, at least in Europe, literally have the same chassis in electric and non-electric versions. My local bus system uses these, for instance: https://en.wikipedia.org/wiki/Wright_StreetDeck#StreetDeck_E... - they're available in plain diesel, light hybrid, hydrogen, and electric.

Here's another example, available in diesel, plugin hybrid, electric, and _natural gas_: https://en.wikipedia.org/wiki/Alexander_Dennis_Enviro400_Cit... (my local system uses the hybrid version of these).

Even for double deckers, which are a bit of a niche and really mostly only used in Ireland and the UK in Europe, there are at least four big manufacturers, only one of which is BYD.

Quebec (ARTM/STM) already uses electric buses from Novabus (Volvo), so no.

Which Canada currently tariffs at 100% (long predates Trump’s scheme).