I give you an idea: I modded the handling of the airtug and now it's much fun to drift on it through the roads with 70mph. LOL
If there is a way to install this car without having to overwrite another one, I will definitely do it.
ETA: The creator's intention is to either overwrite the Rhapsody or the Panto. Neither of both will I do. Even if it's possible to actually ADD that car (is it?) I don't know of a way how to spawn it in game. So I have to refrain.