My hometown in the northeastern U.S. has had clean drinkable municipal water supplied 24/7 for over 100 years,a good portion of the DR doesn't even have municipal water and the areas that do it sure isn't 24/7 nor drinkable so I doubt we'll see self driving cars here in any numbers any time soon.
Maybe there is a lot more money to be made from self driving vehicles then providing clean drinking water. The governments will have to approve it but the government won't be involved in creating or improving the technology. Once it is worth it finically would it be that hard to get the Government to agree.
Drinking water compared to self driving cars? I have no idea why anyone would bring the two topics up in the same paragraph. There is virtually zero relationship between them and any comparison makes no sense.