Car companies changed to unleaded, why not LPG! And lets face it they (the management) might moan behind closed doors, but how many car companies nowadays are keen to be green? Honda is one example. They just need a little nudge to move quicker.
Yes, chav's love the Trafford Centre, but a lot of people are genuinely concerned about urban neglect, post offices shutting, corner shops disappearing, and high streets becoming cloned. If we introduce massive predestrianized zones, better incentives for taking empty shops etc and don't allow planning permission for out of town etc, that will have a positive impact enviromentally, and socially!
When it comes to taxes, I would be happy to spend a penny more per pound if I knew it was going to be spent improving the enviroment that I lived in, the health care services, education etc. Not very popular I acknowledge, but it is better than so called stealth taxes that Labour are obessed with.