I don't want to drive anywhere that *wouldn't* be asking these sorts of questions
Once you get past the territorial chest thumping and boilerplate legalese in that letter the specific questions seem like exactly the sort of thing the people responsible for "Highway Safety" should be asking:
1. Describe in detail how the comma one is installed in a vehicle and provide a copy of installation instructions for the comma one.
2. Describe in detail the advanced driver assistance features of the comma one, including how those features differ from the existing features of the vehicles in which the comma one is intended to be installed.
3. Describe in detail how a vehicle driver uses the comma one and provide a copy of user instructions for the comma one.
4. Provide a detailed description of the conditions under which you believe a vehicle equipped with comma one may operate safety. This description must include:
a. The types of roadways on which a vehicle equipped with comma one may operate safely;
b. The geographic area in which a vehicle equipped with comma one may operate safely;
c. The speed range in which a vehicle equipped with comma one may operate safely;
d. The traffic conditions in which a vehicle equipped with comma one may operate safely;
e. The environmental conditions such weather or time of day in which a vehicle equipped with comma one may operate safely; and
f. The amount and type of driver inputs necessary for a vehicle equipped with comma one to operate safely.
5. Provide a detailed description of the basis for your response to Request No. 4, including a description of any testing or analysis to determine safe operating conditions for a vehicle equipped with comma one.
6. Describe the steps you have taken or plan to take to ensure the safe operation of a vehicle equipped with comma one, including but not limited to automated shutoff of comma one features and owner education.
7. Provide a list by make, model, model year or year of production of each vehicle for which you support or anticipate supporting use of the comma one.
8. Describe in detail any steps you have taken to ensure that installation of the comma one in any supported vehicle does not have unintended consequences on the vehicle's operation.
9. Describe the functionality of comma one, if any, if installed in an unsupported vehicle.
10. Have you done any analysis or testing of the impact or potential impact of comma one on the vehicle's compliance with the FMVSS? If yes, please describe the analysis or testing in detail and provide supporting documentation. If no, describe why not.
11. Describe in detail how the comma one impacts a vehicle's rearview mirror, including whether it requires removal of the rearview mirror or the extent to which it blocks or obstructs the rearview mirror.
12. State your position on how the comma one does or does not affect a vehicle's compliance with FMVSS No. 111, Rearview mirrors (49 C.F.R. § 571.111), and provide any supporting information or documentation to support your position.
13. State the date on which you currently plan to begin selling the comma one, and provide a list of all retailers and/or websites through which you anticipate selling the comma one.
14. State the date on which you currently plan to begin shipping the comma one.
15. Provide any other information which you believe supports the safety of the comma one.
Possibly some of the questions would be premature, like details of the end-user instructions, but most of that reads like a list of things that should have been at least thought through.