I don't think this is a bad free write, just intriguing. I keep reading this, pondering what you might mean, and I haven't come to a solid conclusion. The first two lines have got me puzzled. You talk about a car, workers, and barrels. The type of car I want to think about is an armoured vehicle. Barrels, guns? Workers, soldiers? This view is enhanced by the fact their keeping “unwanted visitors” out. Except then my entire view is pulled apart by the third stanza, first line. Their your workers, (as stated in the first line) but they forbid you to talk? Whose giving orders now!
I then came up with things like, it's a limousine, your the president, to it's your mind, your mind are the workers blocking out bad vibes, and as a last resort, aliens (don't ask me how aliens play in this because I have no idea)!
Forgive me, this is not meant as negative criticism, but honest to goodness interest in your poem. What inspired you to write this? What were your feelings when you wrote this? I am rather nosy... so feel free to ignore... how tall are you? jk... no, really, how tall are you? Ook... i'll stop now, my only excuse being that I just finished graveyard and have not quite connected all the dots.
Thanks for posting, its been fun for me to read!