Green vehicle tax hike should take more than engine size into account

JUDGING by your letters page it would seem readers have made the case for almost every kind and size of vehicle to be exempted from any increase in registration fees in the upcoming budget.

Recently I read in a learned American journal that the Greens’ favourite hybrid car actually has a much bigger manufacturing carbon footprint than the massive Hummer.

And the article pointed out that hybrids use a large number of batteries to store electricity.