It is two years to the day since my right hon. Friend the Minister of State answered an Adjournment debate which I initiated on this subject. We do not seem to have moved very far in the intervening period.
My hon. Friend the Member for Birmingham, Erdington (Mr. Silverman) and I share responsibility for the M6 motorway in Birmingham. My constituents will be outraged by some of the comments of Conservative Members—that, for example, it is acceptable that city dwellers should have a high degree of poison in the atmosphere. I do not accept that that should be the status quo.
I hope that my right hon. Friend will admit that it would be the ultimate in twentieth century bureaucratic nonsense to install lead traps in motor cars to remove from petrol lead that need not be present in the first place.