Canada

The same situation could also be explained by Tesla not submitting claims as they come, instead submitting them as a group after there were comments about the funding starting to end

Yes, that's possible. That's why there's an ongoing investigation.

Which would also make sense. Large companies paying and submitting claims for things in bulk on longer cycles like quarterly is very common.

These are not large companies, these are car dealerships. They operate and submit those independently from each other. And when they submit the form, they state when the sale was made. That's how the investigation came to be, because they stated a surge of sales.

The simplest explanation is they registered sales that they intended to make later, just to get the rebates while it was still possible, which is fraud.