Elon Musk has just revealed that nearly 400,000 people have put down the $1,000 deposit required to be in line for Tesla’s Model 3 – its $35,000 assault on the mainstream motoring industry. That that sort of demand “surprised even us”, Elon Musk told a conference crowd in Oslo this morning, according to Reuters. While that comment sounds like a bit of modesty, Musk does have cause for concern. Despite the company’s $25 billion valuation – which makes it more valuable than Mitsubishi, Kia and Mazda – it has only made and sold 125,000 cars worldwide since it first began delivery of the…

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