"He started with Tesla before the rollout of Roadster, and now that we've reached the launch of Model 3, he felt the time was right to move on and spend more time with his family", Tesla's statement read.
Jon McNeill, Tesla's president of global sales and service will take over O'Connell's team and responsibilities.
Tesla's plans for new electric vehicles including a commercial truck called the Tesla Semi were announced past year and in April Musk said the release of the semi-truck was set for September.
O'Connell's exit follows a spate of high-level management departures from the auto maker.
A 200 to 300-mile electric range would be consistent with current battery technology, according to Reuters' August 24 report, though it remains to be seen what the Tesla truck's real-world range will be, and how much cargo it can carry.
Tesla didn't show off its electric semi truck this month as originally planned, but the company isn't leaving people in the dark.
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