When vehicle is destroyed without anything in inventory the corpse graphics spawn but cannot be right click to remove.

is it possible to remove them?
or alternatively, is it possible to have an option to NOT remove the corpse immediately after loot?

There is an option for that, in the mod map settings there's one called "Keep remains" that does exactly what you want it to.
I also had a line of code that doesn't spawn a selectable corpse if there are no items, which I now think I should remove since that's not what happens for player corpses; Those just stay there until you mine them, which was changed in 2.0. I think I'm going to change it to always spawning a corpse, and the setting will still exist to keep the remains after removing the corpse inventory entity. What I'm not sure about now is if I should remove the graphics instantly if a vehicle dies and keep remains is set to false, but I don't think there's a good answer there since there's downsides to both ways.

Thank you for the response, So in the map settings I only have
- Item Loss Chance
- Item Loss Minimum
- Item Loss Maximum
under Vehicle Corpses, should "Keep remains" be in the same place as those, I can't find it.

You know what, I think I added that as a setting and was going to work on the mod more, then never got around to it. Now I'm working on it again and thought that was a released feature, so that's completely on me. So, it will be a setting on next release, which will be some time later today. Sorry for the confusion!

no problem at all, take your time!

Just released 0.1.2, which has the keep remains setting and changes the empty corpses from not disappearing instantly. Thanks for the report/suggestion!

<3