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Any way it's measured, Tesla's $5 billion 'gigafactory' is huge

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Just how big a deal is the "gigafactory" that Tesla Motors says it's going to build to make batteries for its electric cars?

As veteran auto writer Micheline Maynard writes for Forbes, Tesla founder Elon Musk is "taking on a manufacturing project that might give pause to companies with much more experience." She also notes, though, that "whether it's shooting rockets into space, or building a $70,000 electric luxury car ... Musk has never shied away from a challenge."

He's a big dreamer, as All Tech Considered has said before: "A Closer Look At Elon Musk's Much-Hyped Hyperloop."

Tesla expects to choose the site for its gigafactory and begin construction later this year. If all goes as planned, battery production would begin in 2017.