As Snyder, head of client services for Tesla, put the pedal to the metal and took one of the sleek new automobiles down a sidestreet Thursday, its lithium-ion battery-powered engine didn't give off any sparks. But it did emit a constant, powerful-sounding hum, one resembling a much quieter version of a jet taking off.
"Accelerate pretty good?" Snyder, knowing the answer, asked as he put the car through its paces.
"I call it a turbine sound," he said of the engine's distinctive hum. "Because it's an electric motor it's got 100 percent torque all the time.
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