Very nice! Instead of adding more logic to your bp, you can tune the trigger's collision settings, so it doesn't detect two types at once(in our case it's WorldDynamic and Vehicle). Go to collision settings, set it to "custom", and set one of those two parameters to Ignore.
Love your vids man! can i ask for 1 tutorial ? How would u make your character be posessed by AI on idle and then on any mouse click get reposessed by Player ?