Great job on all the turtle stories.I think you are all on the right track when you say turtles don't jump in front of a vehicle.People run over turtles on purpose,for what reason I couldn't tell you.
When I was in high school four of us friends were riding around on back roads.Just doing what kids do.One of the guys saids stop,he then jumps out of the car with his rifle.With out warning he fires at a turtle sitting on a log and kills it.I asked him why did you do that,he saids why not,whats the big deal.That same friend went on to kill his x-girlfriends new boyfriend,just one small step from turtles to people!!!