I drive a truck, of all possible glamorous occupations, and I almost always haul scrap metal. Very thick metal, like railroad rails and bulldozer parts, will go to certain destinations. More common scrap-- such as cars, washing machines, and that steel sheet found on modern barns-- goes to places that have scrap shredders.
A shredder is a large structure, with engines supplying thousands of horsepower to turn a massive rotor approximately eight feet wide, which is lined with dozens of swinging hammers weighing a couple hundred pounds each. After being battered into fist-sized chunks, the scrap is sent to conveyors and magnets and such, with the end result being three piles: iron and steel (ferrous metal), non-ferrous metal (like aluminum and copper), and "fluff" (everything else). Fluff contains seat cushions, rubber, glass, plastic, dirt-- anything that doesn't conduct electricity. So, yes, some parts of it are fluffy, but it wouldn't be very comfortable.
Some materials are not acceptable to be shredded. Actually, there's quite a list, though some of the banned items are winked at. Lead-acid batteries (like in your car) are forbidden, as are the large capacitors that serve microwaves and fluorescent lights-- unless a label says they are free of PCB's. Cars must be drained of their oil and coolant, and stripped of as many tires as possible. Propane and gasoline tanks are strictly forbidden. It doesn't take a lot of imagination to picture what bad things might happen to a volatile fuel container suddenly ripped apart in a shower of sparks. I haven't seen a bad one, but I hear that the fires can be impressive.
Now, since I've been hauling junk most every day for the last sixteen months, I've seen quite a few things junked that I was sad to see go. Classic cars, still-good equipment from Kodak and Xerox, useful truck components, farm machinery from the first half of the 20th century-- all sorts of things. Some smaller things can be saved-- indeed, over half of the hand tools that I carry in the truck were rescued. Sometimes, though, the metal recycling business just breaks your heart.
Yesterday was one of those times. Yesterday was the worst ever.
I had unloaded my 9 or so tons of various shreddable scrap, received my paperwork, and already begun to drive away... just like any other day, going past the shredder. There was another big truck backed in, and the grapple crane had pulled a car out of that truck, wending its way through to air toward noisy and brutal destruction.
Something about the tail of the car caught my eye instantly. It was a small car, but the trunk looked a bit too narrow, and that set off mental warning bells. Next, my eye swept over the rear fenders-- or, perhaps, the lack of fenders. The car featured a smooth cover over the top half of the rear wheel, and no fender bulge at all. No, I thought, it couldn't be...
And then I looked at the wheels. Those unique aluminum wheels, with a design that reminds you of a printed circuit board.
No! ...but it was. It was an EV1, the completely electric car designed by AreoVironment and General Motors. Among other feats, the most aerodynamic production car ever.
After seeing the innocent vehicle swung to its doom, I spotted one of my friends who works at the facility. I parked the truck, grabbed my hard hat, and hopped out. My associate was familiar with the EV1, it seems, because they get them coming in to shred "all the time." That entire truckload was nothing but EV1's. Aah! Not much steel in them, he said. Aluminum, copper, fiberglass, and such. The situation seemed odd, so I inquired if they were legally barred from salvaging from the EV1's.
Sure enough, there was a guy from GM sitting in a Saturn SUV, watching. The scrap guys weren't allowed to remove a car from that truck unless it went directly into the shredder. Because, you see, every EV1 is owned by GM, and only leased to drivers. Apparently, the car is considered to be an engineering test, and now they're being destroyed. Here's GM's "lessons learned" page about the EV1 project.
Now, normal cars have to be stripped of a lot of things, but these still had the tires on, which made me wonder. What could or couldn't be shredded? What might or might not still be in there? He did list copper, after all, and copper... Oh, no! So, I asked if the motors and such had been removed, and they were just shredding the hull.
No, he said, "they have the motors in them." Egad. "They have everything in them."
Now, I can only recall so much as the car's detailed specifications, but that's a hundred-plus horsepower three-phase electric motor, with three inverters to run it from the battery, no doubt rectifiers to recharge the battery... and, if they're OK to shred, half a ton of nickel-metal hydride batteries.
After I learned about the guts of the EV1, a couple-few years ago, I immediately drew up a plan for a hybrid diesel-electric heavy truck-- based on the motor from an EV1, because I knew its basic specs, and it seemed decent for the job. Of course, I would never be able to get my hands on one, but at least my plan called for a device that I knew to exist. It's not easy to find electric motors that large.
Such a waste. A horrible, awful waste. I, no doubt among other people, would pay thousands of dollars for the innards of that car. Heck-- there might be enough people willing to outbid me that there wouldn't be enough EV1's to dismantle for me to afford one.
Smash! Rumble! Rend!
Or that next car. Crash! Destroy! Or that one...
Posted by Mitch at December 17, 2005 05:36 PM