- What's in the installation + operating manual? - Items 1-3
- Is it safe? Did you do testing? How? Items 4-6
- What vehicles does it work on? What happens if you screw up during installation? Items 7-8
- What happens if an owner screws up and puts in an unsupported car? Item 9
- Did you think about whether this keeps the car compliant with other safety regulations? In particular, did you think about the legality of blocking/removing the mirror? Did you do testing? Items 10-12
- When are you selling/shipping it? Items 13-14
- Anything else you want us to know? Item 15
Every single item is a completely reasonable question to ask. I'd certainly hope comma.ai knew the answer to each of these questions before they sold it to the public.
Again, if 2 weeks wasn't enough time, then negotiate with them and give them what you have. Threats of daily fines are often boilerplate that get tacked on to ensure that people take the request seriously; I'd challenge anyone to find an example where the regulatee cooperated with the regulator in good faith and still got fined for not responding.
The requested things are pre-existing regulation requirements, simply worded with leading questions to prevent unnecessary back-and-forth.
For one of many examples, public information seems to show that his device affects the rear view mirror in a manner that violates specific pre-existing regulations, they ask him how does it affect the rear view mirror and how does it comply with those regulations.
There are only two reasonable responses for such a question - (a) he submits the evidence he has (and had before receiving that letter!) that his product is compliant with these regulations; or (b) he acknowledges that right now he cannot demonstrate that the product is safe and will not sell the product.
For such devices, documentary evidence (including testing results, and all other "random crap" requested) is an integral component of the device - if you don't have all this done, attempting to sell the product is prohibited. That is pre-existing regulation.
