Every car manufacturer, even in the USA, harms people with their cars. Even a battery car emits particulate matter. If you really want to put something sensible on the road, it's the FCEV. That frees the air from particulate matter.
>hydrogen cars are only half as efficient. If an electric car converts 86% of the energy originally harnessed by a wind turbine into moving the vehicle forward, the hydrogen car has access to only about 45%.
Source: https://www.bloomberg.com/opinion/articles/2020-11-09/how-hy...
Energy generation is the main source of pollution for an EV over its whole lifetime. So, an FCEV is far worse than EV (however you produce your hydrogen).
It doesn't, as long as the car still has tires and brakes.