I think I see your issue
you never actually set a zone
if you were using zone bricks, they default to having a zone inside of them, but since that isn't a zone brick, it doesn't default to having it
you should be able to do input>self>setzone[center] or something similar
you don't need zone bricks to do this, but they will do exactly what you want as well
also, for the vehicle output, zone events just let you use the vehicle target, you need another addon like vehicle events to add an output
f, forgot my nobbc tags