OAKLAND — It has been 12 years since 44-year-old Bowin David pinned a motorcyclist between his Honda and another passing vehicle on the west side of the Caldecott Tunnel, only to be shot by an off-duty California Highway Patrol officer on the east side of the tunnel.

Now, the case has finally ended. After a jury trial this year where he was convicted of aggravated mayhem and attempted murder, David was sentenced to an eight-year prison term, plus a prison term of seven years to life. He gets credit for the more than 4,000 days he spent confined — both in jail and at a state mental hospital — while the case was pending, court records show.

The case stems from a road rage incident on Aug. 16, 2013, when the motorcyclist allegedly made a hand gesture at David on Highway 24 in Oakland, which

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