Joe Kelley
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http://blogs.thecarconnection.com/marty-blog/1040177_seven-things-you-didnt-know-about-the-2010-tesla-roadster
# 6: LITHIUM-ION CELLS
It was the very first production car to use lithium-ion cells*, which pack roughly twice the energy into a given mass as do the nickel-metal-hydride batteries used in almost every hybrid car for the last dozen years. More energy = more power = more driving fun. Case closed.
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