I’ve just had a fascinating conversation with a senior motor industry analyst, who was able to put some numbers against the potential costs of creating the much-discussed ‘scrappage’ scheme.

It was enough to persuade me that these incentives are a pretty good idea – and a far cheaper way to help blow some of the tumbleweed out of the nation’s car showroooms than the government’s heavy, cumbersome ‘loan guarantee’ scheme.

According to my contact, who has been in on discussions at the highest level, the scrappage scheme would cost the exchequer around £170m. That’s a non-trivial amount of money – but it pales into something approaching insignificance next to the oceans of cash that have been ploughed into Britain’s beleaguered banking sector.

That £170m would pay for a scrappage scheme capped at 250,000 cars and 30,000 commercial vehicles, with the extra VAT the government would rake off the new sales offsetting a fair chunk of the incentive for scrapping an older car, which would be set at around £2000 per vehicle.