Steve wrote:
In article , Steve Firth
writes
Mark Townend wrote:

No, running a bus on methane means that CO2 is emitted from the
bus (as well as water) hence it's not "zero emission".

I never said it was

No, some ****wit from LT on R4 this week was trying to claim it was.

There is no methane involved. There are no carbon emissions. Only
water. You do not have your facts correct.

But the Usernet pedants will still insist water is an 'emission' - thus
missing the point entirely