Silicon Valley upgrades the Porsche 911

Vonnen’s electric motor packs the classic Porsche 911 with even more punch.

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Silicon Valley has beaten Porsche to the draw and launched its own version of a 911 hybrid, says Kyle Fortune in Car magazine. The Santa Clara-based firm Vonnen has worked out how to "pancake an electric motor between the engine and gearbox" to create a hybrid engine and has named its technology the "Shadow Drive". The electric motor adds up to 148bhp of power that increase alone is more than the total power of a 911 engine from 1973 while adding only around 77kg to the total weight.

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