I respectfully disagree, in that running changes, happen with auto makers all the time, since year dot.
The only thing that is "fixed" is the main body styling.
We have no idea really, how long they've been working on it, with MegaChip’s.
It was possibly before, MegaChips even signed the IP deal (we know that Mercedes would have been working with BRN, well before).
They wouldn't have done so, if there wasn't already significant traction, to justify the 2 million dollar licence fee (and in fact, I think MegaChips, stated something to this effect, in the original agreement, as to "customers" that Brainchip, already had)..
It's all speculation, but shooting the idea down as a matter of fact, is unreasonable, in this case, in my opinion