The $1 Trillion Infrastructure Investment and Jobs Act (text) passed by President Biden in Nov 2021 included a little clause that I think might surprise everyone.

ALL cars sold from 2026 onwards must include a drunk driving detection system in order to use the vehicle. It might mean a passive system of some sort that analyzes your driving – or could include something as invasive as a breathalyzer. There’s increasing evidence this may not be possible by 2026, but it’s something to keep in mind.

SEC. 24220
            (1) Advanced drunk and impaired driving prevention 
        technology.--The term ``advanced drunk and impaired driving 
        prevention technology'' means a system that--
                    (A) can--
                          (i) passively monitor the performance of a 
                      driver of a motor vehicle to accurately identify 
                      whether that driver may be impaired; and
                          (ii) prevent or limit motor vehicle operation 
                      if an impairment is detected;
                    (B) can--

[[Page 135 STAT. 832]]

                          (i) passively and accurately detect whether 
                      the blood alcohol concentration of a driver of a 
                      motor vehicle is equal to or greater than the 
                      blood alcohol concentration described in section 
                      163(a) of title 23, United States Code; and
                          (ii) prevent or limit motor vehicle operation 
                      if a blood alcohol concentration above the legal 
                      limit is detected; or
                    (C) is a combination of systems described in 
                subparagraphs (A) and (B).