Just need to tax fuel more, bear with me before you lynch me!
I know fuel is taxed to bu99ery, currently 70% or something like that but if road tax was incorporated into fuel costs then we would all pay for what we use.
We would pay by the mile, it would give people the incentive to have better fuel efficient cars, vehicle tax dodgers would be a thing of the past thus increasing revenue, we could do away with loads of civil servants thus saving further cash etc.
Yes there are a few downfalls like people out of work, high cost fuelled cars like ours would be penalised etc but then you could have 2 vehicles one for piddling to work in and one for snorting around in!