Right now you cannot automatically load your ground vehicle into your ship at port. The most effective way at this time is to launch your ship, go to an outpost on a moon, spawn your ground vehicle and drive it onto your ship. YMMV.
As for hunting others, I have no clue. I THINK once someone is wanted level 3 or more you see them as an enemy and can target them as such.
But all of the crime and criminality system is a placeholder at this time, and will become something far more in depth later.