I thought there were two layers of cells in S and X packs, so that's 10 mm difference in cell height, which makes that a factor of five, not ten. What I don't know about are the connections required and the spacing needed between the two layers. You'd think they'd not be much different between the two cell types, but perhaps that's wrong. Anyone?
As mention above, there is one double stack of modules at the front of the pack. The modules themselves have bus bars on the top and bottom versus the 3 that has all connections on top.
I think something that needs to be kept in mind here re the hacks and tricking is that even the human computer (us, people) can be tricked by messing with the road signs, traffic lights, and street lines/paint. It's not just computers. Humans can be "hacked" too. Bottom line is that such nonsense is illegal. You can't guard against all these "hacks".
You don't even need a hack, putting traffic cones in the way will stop an autonomous car.
Is it? If it fits inside the existing enclosure, which I believe it would, they could just use the Model 3 type cooling passages and connecting plates built into modules which fit the S/X dimensions. I'm not saying they are going to or should be doing this now, I just don't think it's all that difficult
The overal dinensions work, but the pack internally has walls for each module. Going to full length modules like the 3 would kill the existing structural strength. Reusing the the same module dinensions would likely result in loss of capacity due to dead space (18 vs 21 modulus fits 6 in the space of 7, but modules aren't set up that way)