Cars are an essential part of life for many of us. But new petrol and diesel cars will be banned from sale in 2030 to help reduce greenhouse gas emissions. Electric cars are selling fast, but are not without controversy. Justin Rowlatt, the BBC’s climate editor, explores if the UK is on track to hit the government’s targets to stop emitting greenhouse gases by 2050. He investigates electric cars to see if they are good enough to replace petrol. He meets an ex-petrolhead who converts classic cars to electric for a living. Justin puts a converted VW Beetle to the test in the glorious Welsh countryside and heads to Ford’s Dagenham plant to see what the change to electric means for the UK’s car industry.