People don't use cars because fuel is too cheap but because public transport is too expensive. Don't blame the protestors. In some cases the recent rise in fuel prices means companies and small one-man bands that are dependant on vehicles are now running at a loss. It is simply not good enough for environmentalists to say - 'told you so' because many people who are dependant on their vehicles have been forced into that position as public transport has been withdrawn or made impossibly expensive. We mustn't forget social considerations when moaning about dependance on cars.
Many people truly have no public transport alternative any more.
If the rail fare from Bristol to Oxford, for example, was cheaper than the cost of the fuel to drive far more people would take the train. Problem is over expensive public transport and profiteering privatised bus and rail companies. What with the profiteering oil companies for most people there's no way out. Protesting truckers and motorists are quite right to fight back against the hike in fuel prices. And they are targeting the oil companies more as they learn about how the industry works.