I asked Slate about 4x4 all-wheel-drive:
And this is Slate's answer:
... all-wheel drive is in the plans for a future version of Slate. It won't be available at launch, but we know how important it is for folks in snowier climates, on job sites, or looking for that extra traction.
I just got a reply asking about the federal incentives and this is slate auto’s response I feel at ease a bit and I think the price they are referring to is the $25,000 I believe so still a good deal in my eyes then again I did customize mine all out so XD we will see.