Sorry I didn't answer any sooner! Seems I read your post but couldn't answer immediately and then forgot about it ...
Why isn't there a keybind to summon the vehicle?
Because the way this mod is currently working is that you have to choose a position for the vehicle. Two suggestions:
- Using a keybind would put the keys in your hands, so that you can summon the vehicle manually.
- Using a keybind would look for a suitable position in a certain radius around your character and teleport the vehicle there.
or let us put the keys on the quickbar where we put items in general?
Since version 1.1.2, the keys aren't craftable items anymore. They will be put in your cursor when the shortcut is used, and deleted when you're done.