Lib Dem leader Nick Clegg has suggested a proposal to ban smoking in cars carrying children would be comparable to trying to legislate to stop a child watching too much TV or drinking too many fizzy drinks.
The Deputy Prime Minister made it clear he would not back such a ban after the Labour plan was approved last night by the House of Lords.
Speaking on LBC radio, Mr Clegg said: "Of course it is a stupid thing to do to smoke in a car with kids in the back, of course it is - in the same way you shouldn't give your children a can of Coke before going to bed or only feed them on crisps breakfast, lunch and supper.
"I think you shouldn't legislate unless you think it is going to make a difference, and I don't see how this is going to be enforced. "
More top news
Brian Cullinan's error led to La La Land being mistakenly announced as the Best Picture at the Oscars.
The Food Standards Agency said the product can be returned "from where it was bought for a full refund."
The car giant said it would cut 1,160 jobs at the plant in Bridgend.