Musk’s Battery Day plan ‘stretches the bounds of imagination,’ but experts say the ambitious gambit will help Tesla fend off competition from GM and VW

Tesla outlined a path to cheaper and more efficient batteries on Tuesday.
  • Elon Musk said during Tuesday’s “Battery Day” that Tesla will design and produce its own battery cells.
  • The electric-car maker said the in-house cells will bring major cost savings and performance improvements that could lead to a $25,000 car in the coming years.
  • While Tesla probably won’t hit its most ambitious projections, experts said, the company’s big-picture approach should pay off in the long run.
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Tesla’s predictions tend to follow a pattern: The electric-car maker says it’s super close to hitting an ambitious milestone, falls short of its aggressive timeline, eventually makes meaningful progress toward its goal, and is cheered on by investors and fans alike.

To take one recent example, Tesla CEO Elon Musk long promised the company’s Model 3 sedan would come with a

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