The two issues are very different. There is always a choice between leaded and unleaded petrol, at least for some cars. I have recently seen something called "super leaded" in garages. It costs the same as unleaded, but I wonder whether petrol companies will continue to rip off motorists by charging high prices.
There is no question of providing an incentive to fit catalytic converters. It has to be done. We have agreed it with the EC. There are cases for incentives in certain circumstances, but they should be argued on their merits. I regret that I have to say that I do not think that the case has been proven here. I would rather that the money which would be lost to the Treasury were spent on other environmental concerns.
How much does the Economic Secretary think the Treasury would lose if the new clause were accepted? Can he think of better environmental uses for the money? I sympathise with the new clause, but I think that it is the wrong approach.