This script will provide vehicle-related event triggers.FeaturesUsage
If an event should be triggered by an airship, set the priority to "above characters"
You can still trigger it normally by walking up to it, but at least you can do stuff in airships.Script
Currently it only gives you the ability to trigger events using airships, but maybe that will be useful.
These are not vehicle-only triggers. If you require vehicle-only, use Event extensions
to specify more conditions