This giant vacuum

Posted Sep 4, 2016, 1:00 AM UTC
25

Posted Sep 4, 2016, 1:00 AM UTC
It's a concrete pump truck lol
Oh, it sounds like a vacuum
That's the sounds a diesel engine makes when is being revved along with the sound of the concrete pumping concrete. It's quite the opposite of a vacuum I can assure you that.
But its actually not a vacuum.
Oh, it sounds like a vacuum