You MUST have the https://beamng.com/resources/trackfab-superlite.10011/ Trackfab Superlite, its great.
Most of the best mods are in this category https://beamng.com/resources/?order=rating_weighted also this one if you want to shoot missles at cars and shoot at them with a minigun. https://beamng.com/resources/phoulkon-ciws.10397/
@CrimsonCrocodile made a thread like this, I recommend checking it out: https://www.beamng.com/threads/must-have-mods-for-new-players-community-feedback-welcome.59752/