Mystery cars in GF3, Prototypes?

[EV Promoter]

From the 5th dec 2019 video:

This is surprising me, tell me your thoughts.
The white-silverish cars line. For sure used for testing, perhaps some for crash tests.
They doesn't look to me as all M3 or MY, but i can be wrong.

I see, starting from the upper white car,
- 4 cars rounded aft window and a bulky rear.
-Then follows what seems a bit crushed M3.

Then follows 3 cars:
- a silverish model exactly similar to the first 4.
- a white model with a sloping rear and a sort of bi-tone bumper (or just a big black plate), that looks like a M3 Coupè
- a black MY/3 for testing.

For sure the last 3 cars are not the same car.

 

[EV Promoter]

zooming in

 

[Candleflame]

could it be a V3 Model S or possible a long chassis Model 3 (for the chinese market)? Looks like they use the Model 3 snut but have a much longer body like the S has. Tbh for a long chassis Model 3 the roof does not look right, it looks more like an S.

I wonder if they have to change the ICE looking snut of the S to the more EV looking snut on the 3 to increase interior size of the S as currently they are too similar.

 

[ReddyLeaf]

I’ll guess that the entire middle (white,black ) row are test/crash vehicles.