Chris George, Underdale, SA

I CONSIDER myself a car nerd. I love them; all shapes, all sizes. In all the years I have been discussing vehicles with mates, I have never had a single conversation or even comment about emissions. I would have a quiet wager that 99 percent of your readers do not care.

Take the Tesla P85D. What a car! Awesome to look at, fast, practical and (sweet!) you donít need to fuel it. But emissions?

Not interested. Itís just a bonus that the Tesla has Ďzero emissionsí (if you forget the coal-powered electric station recharging the car).

I think all industries have a responsibility to do their best for the environment wherever possible, however, so I have one word for you: hydrogen.