Every single car I have been in in the last 5 years or so has Bluetooth. No need for aux ports in this day and age, especially when devices dont have headphone jacks anymore.
Are you stuck in the 2000's?
Bluetoothing to your car is to me the same energy as using "wireless" charging stands for your phone. You are just replacing a physical tether with a less efficient digital tether of higher complexity for no actual gains.