I'm in two minds on this one. Having just bought a 4L V8 car purely for enjoyment purposes, I don't mind stumping up- I admit it's an extravagance as I rarely really need a car for practical purposes, (although it is very useful) let alone a 4L V8. I see it as "pay to play".
On the other hand I ride a motorbike to work (Hammersmith from Guildford) every day and the fuel costs are starting to hit hard. I ride a bike because it's ultra-practical, causes the minimum amount of pollution, negligible congestion, and above all my journey takes 40 minutes as opposed to 2.5 hours. It's still way cheaper by bike, but for how long? And to be honest I'd give up my well-paid management-level job long before I'd consider paying through the teeth for the poor, expensive, unreliable so called "service" that is Public Transport.
If I thought the money made on fuel, cigarettes, electricity, gas, fatty foods, consumer goods etc was being put to good use to address the problems or society, I'd be happy. But it doesn't- same as always it gets spent on £1200-per-meter carpet in parliament, big backhanders to government preferred contractors and countless useless quangos.
I just wish our government would consider giving realistic options rather than just fining everyone for everything they do that's considered irresponsible.