In message , at 16:37:38 on Thu,
25 Jul 2013, Mike Bristow remarked:
God almighty , how often is this idiotic excuse going to keep coming up?
ALL vehicles should be taxed.

What cost would you charge each vehicle? In proportion to the damage they
do to roads? In proportion to the pollution they emit?

It's normally some sort of proxy for "as much as they can afford".

eg Bigger and more expensive cars, houses etc, the more the tax is.
--
Roland Perry