First sketch of 4680 integrated pack

Only 9 seconds long, I recommend playing it at a slow speed:

The battery cells become structural like the empty cells of a honey comb panel:

This gives tremendous mechanical strength to the battery pack as a floor plan and structural body part.

Bob Wilson

 

Source: Tesla recalls 9,500 Model Xs and Ys over weak adhesive and loose bolts - The Verge

A second, smaller recall was issued for 401 Model Y vehicles from the 2020 model year, which may feature loose bolts in the front upper control arm that connects to the car’s steering knuckles. Without the bolts properly tightened, the arm could detach from the steering knuckles, affecting the driver’s ability to steer the car. . . .​

Source_2: Toyota Mirai US car sales figures

2019 1,502​

Looks like 401 / 1502 ~= 27% of the total Mirai sales were in the Model Y recall ("The Mouse That Roared").

Bob Wilson

 

I recently stumbled across this technical YouTube:

Usually, the signal-to-noise ratio is low enough I recommend speeding up the playback. This one needs more time and following up papers referenced.

BTW, Tesla battery advances have increased the expected semi-truck range from 500 km to 620 km:

I'm not in the market to buy a Class 8, semi-trailer truck. But for sure, BEV is the way to go for cost and because the driver labor limitations provide all the time needed to charge the trucks. Perhaps Nikola might make a real truck someday that does more than roll down a hill.

Bob Wilson