The Re-Volt Hideout

I have a few cars in the game like this plane - aiplane and in the game half of it is under the track. Is there a way to fix it?
Probably in blender but I have no idea how to use it. I'm trying to use Marv's plug-in, I can import the car but what next?

I'm not quite sure what your concern is: does it apply to several vehicles or just this plane?
The solution should be in the parameters.txt file in the car's folder
You should have a look here (I’m not very familiar with the subject and won’t be able to help you any further):
https://re-volt.gitlab.io/rvgl-docs/cars.html

I mean half of it is underground. You can see the other half only when it flies.