This is about a really clean car, either following a trip or at anytime. Having hauled hay in mine (nothing more invasive than hay dust), that was only in addition to the normal bits of straw wrapper tear-offs that get between seats and the sand in impossible crevices that no vacuum attachment can reach.
Along comes Fall of 2013 and a bad shoulder that would not be happy raking leaves, let alone sweeping the same kinds of impossible crevices on porches. I bought a powerful leaf blower on sale for $79. Having experienced great joy blasting leaves and dirt out of places I’d never be able to reach from yard, porch and then deck, I still wanted to play with my new toy yet more. Oh 2+2! Hay dust! I opened all the doors to my minivan, took everything out, stood back in the classic Rambo machine gun position and had at it, full power. Wow! Stuff flew out from everywhere! Even a ballpoint pen took flight, to say nothing of a rain shower of quarters because I’d forgotten to close the coin drawer.
At first it was just that kind of tornado swirl in there but very little practice gets you banking the airflow off hard surfaces so everything flies outside. You can get between the seats, under the seats, all around the gas/brake pedal stem casings, the corners between dash top and windshield, and even the teensy weensy crevices around the buttons on your dashboard. Suffice it to say, there isn’t a crevice small enough that 120mph of highly concentrated wind blast can’t penetrate. The whole van took about 5-7 minutes, and that included the learning curve on how to bank the airflow. We are talking cuh-leeeeeeeeeean!
Two cautions: First, I already mentioned about the pen taking flight, so don’t have someone standing on the other side. And it’s not a bad idea to actually wear safety goggles because that pen had been hiding under a seat and things really fly. Second, if you have a slide-out coin drawer, close it.