At the very best it will only put Google on par with Tesla in terms of collected data. Given that it will require Google to reverse-engineer how Tesla process their data it seems like it would still require quite a large investment on their part.

It's data from a completely different sensor suite than Google uses so might not be as useful to them, but I don't see why not.

He opened the patents for most of the car, maybe he will do the same for the data or even the self driving stuff once he's ready after all his goal is to get people into electric cars.