The 500kg Microlino is part of a new set challenging the ever-increasing domination of huge cars

Driving through central London in a tiny Microlino electric car, barely visible between the hulking SUVs, it’s surprising to be the focus of so much attention. “Yes, Lego car!” shouts a scaffolder.

Made by Micro, the family-owned Swiss company behind the mini-micro kick scooters, and modelled on the bubble cars that had a brief heyday in the 1950s, the two-seater is only 2.5 metres long – marginally smaller than a Smart car. The most unusual feature is its one and only door (there is also a rear hatch for accessing the boot), which is at the front. The windscreen and bonnet swing open to let you in.

Analysis of real-world data suggests annual cost of fuelling PHEVs is nearly double manufacturers’ claims

Drivers of bestselling plug-in hybrid cars pay £500 a year more on fuel for their cars than manufacturers’ figures suggest, according to analysis of real-world data, largely because owners tend to charge them less frequently than expected.

Laboratory tests of plug-in hybrid electric vehicles (PHEVs) suggest that fuel should cost £560 a year, but real-life data suggests the cost is nearly double that, at £1,059 a year, according to analysis by the Energy and Climate Intelligence Unit (ECIU), a climate research group.

Petrolheads are quick to scorn the idea of electric car racing, but the series’ chief executive is sure that time, technology – and even geography – are on his side

Jeff Dodds has been a fan of Formula One “all my life”, he says. That is probably a good thing because, as chief executive of electric racing series Formula E, he must find the comparison with its fossil-fuelled cousin is constant.

So he takes it head-on. Such is the growth and improvement in technology in Formula E that one day, he says, it is “realistic that a question will be asked about whether both can exist together”. Talking to the Observer in the race company’s west London headquarters, he adds that maybe one day, as Formula E develops, “they won’t [both exist]”.

Joe Biden and Donald Trump agree on tariffs against China. The world has lost its biggest cheerleader for globalisation

The biggest shift in American politics has nothing to do with Stormy Daniels or Michael Cohen, Fox News or golf courses. Indeed, its author is not Donald J Trump. Yet the implications stretch far beyond this year’s presidential elections, and affect countries across the world. The era of free trade is dying, and the man bringing down the guillotine represents the party that in the past three decades has been evangelically pro-globalisation: the Democrats.

Last week, Joe Biden imposed tariffs on a range of Chinese-made goods. Electric cars produced in China will now be hit with import tax of 100%, chips and solar cells 50% and lithium-ion batteries 25%. These and other tariffs on goods worth an estimated $18bn a year amount to a rounding error in the giant US economy. And in an election year, Mr Biden, who hails from Scranton, Pennsylvania, is fretting about support not only in his home state but across the country’s industrial heartland, gutted by decades of free trade.

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Electric and hybrid vehicles are quieter than cars with combustion engines, making them harder to hear, especially in urban areas

Hybrid and electric cars are more likely to strike pedestrians than petrol or diesel vehicles, particularly in towns and cities, according to an analysis of British road traffic accidents.

Data from 32bn miles of battery-powered car travel and 3tn miles of petrol and diesel car trips showed that mile-for-mile electric and hybrid cars were twice as likely to hit pedestrians than fossil fuel-powered cars, and three times more likely to do so in urban areas.

Comments come as Commission president hints EU could impose tariffs on Chinese electric vehicles

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Janet Yellen, the US treasury secretary, has urged the EU to intervene urgently to dampen the growing export levels of Chinese cut-price green technology including solar panels and wind turbines, pushing European leaders to move to a full-scale trade war.

At the same time she urged German bank executives on Tuesday to step up efforts to comply with sanctions against Russia and shut down efforts to circumvent them to avoid potential penalties themselves that could see the US cut them off from dollar access.

Michael Wilkinson has had a good experience using a smart meter when charging his electric car and using a heat pump. But other readers remain unconvinced about their benefits

Recent letters about smart meters (14 May) reported some readers’ bad experiences, but it’s not all negative – our smart meter is allowing our household to cut carbon and save money. In combination with our electric vehicle charger, the smart meter allows us to automatically charge our car at times when there is less demand on the grid and higher renewable-energy generation. This helps balance the grid, and I only pay 7p per kWh to charge the car. This works out at about 1.5p per mile to drive.

The smart meter also works with our heat pump and allows me to pay 15p per kWh for electricity to heat my home. The heat pump’s efficiency means that this works out at about half the price of gas for the same amount of heat.