How much energy you can pack into a battery is one limit on how big an EV can get – but meet the EVs ditching batteries altogether to attain mammoth proportions.
This is no golf cart. This is one of the biggest mining excavators in the world. The clawed bucket it uses for tearing at mineral-laced rock is so big that you could fit more than 3,000 footballs in it. The driver sits in a cab roughly as high up as the roof on an average two-storey British house. And the excavator's hefty caterpillar tracks alone are just shy of 3m tall – and about as long as a London bus.
BBC Future Planet recently went on a hunt for some of the biggest electric vehicles in the world – by size and weight. There is no shortage of impressive examples, from giant mining machines to trains and cargo ships.Bigger electric excavators than the PC8000-11 exist, but Komatsu's vehicle is worth noting for the particularly tough job it does, stresses Jordan.
Ironically, the adoption of electric vehicles in mining has been going on for decades partly because coal mines tend to have their own small power plants, says Jordan. It means they can power electric vehicles on-site at a low cost – albeit using a very polluting power source. In 2015, I'm pretty sure at some point I said heavy goods vehicles will never be battery electric and five years later I was working on it – Chris Thorne
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