I am grateful for the hon. Gentleman’s generosity in giving way. Does he accept that there is a strong case that the motor manufacturers, not just the taxpayer and the consumer, should make a major contribution towards the cost of such a scheme? Volkswagen has had to pay billions of dollars in the United States because of its cheat devices; we know that emissions on the road were at five or six times their supposed laboratory levels, and a lot of cars in France, Germany and elsewhere have been withdrawn for a refit. Is there not a strong case that the Government should go to the manufacturers for a contribution towards the scheme?