Honda is touting a new fuelcell Civic that emits only “clean water vapor” In the current state of the propaganda, water vapor is good.
Reality is irrelevant.
The fuel cell Honda is the FCX, it is not a version of the Civic. It is a totally new design. If I lived in the Los Angeles area, I’d be signing up for one. I’ll just have to wait until they are available here (Naperville, Illinois).
Water vapor will make rain in places where it wouldn’t otherwise rain, therefore it is unacceptable.