The castings are both Front
The castings are both Front and Rear units.
Note that Fremont has been making about 4-500 MY vehicles per day.
So those stacks represent a couple days' worth.
They are NOT SCRAP. Tesla scraps bad castings by cutting them up.
They are aluminum and don't corrode in CA weather.
Tesla is NOT EXPANDING MY PRODUCTION AT FREMONT. They are simply making permanent the Sprung structures already on site. Why would they expand MY at Fremont when Austin is coming on line imminently? Fremont will changeover to the NEW MY BUILD using F+R castings when 4680 batteries become available, then move on to other lines. All MY will eventually be made ion Austin.