"I would say our experience in the United Kingdom is that you can take people with you as you take those difficult decisions, but ... it's a very tough and hard road, but it's a road we all have to travel, " he said.

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"We should be looking to get people safer before they get on the road, rather than restricting them afterwards, because a lot of these proposals are very difficult to police, " he told the BBC.

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But if we keep kicking the can down the road, the problem just keeps getting worse, and then at some point it will be very difficult to deal with because the consequences will be so painful.

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And secondly, unless you live in Montana or Nevada, finding a road where you can safely scream along at more than 100 mph for any length of time is very difficult.

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