Incentives for electric vehicles? Dead before we've even begun to adopt them en-masse. LPG all over again? Like electric, once the saviour but now, according to the experts, 'no longer as green as we thought'.
Bureaucrats cannot resist fiddling with rules because they have nothing else to do. Fiddling is their sole purpose in life. They push us this way, and pull us that, without any long-term aim or strategy. They enjoy sailing holidays in rudderless boats, driving on ice, travel by hovercraft, blind mans bluff, pin the tail on the donkey, and blind dates.
Let's make a real difference to London's congestion. Cull the rule fiddlers and save thousands of wasted car journeys and the release of millions of litres of hot air every day. Now that would be a real step forward.