Android Auto Has Been Hammering My Phone’s Battery

I've noticed recently that my phone needs to be charged way more often than I used to have to do it. I used to be able to go for nearly 2 days on an 80% charge, but I started having to charge daily. Sometimes even multiple times per day! My first thought was that my 2.5 year old Pixel 9A might be starting to show signs of age, and the battery was on its way out. But I have always had charging optimised, so it only charges to 80%. Looking at the health of my battery in settings, it shows the health as normal and reports a 100% capacity. So it's not the battery. The final straw came when I went to bed one evening with a charge of around 65%, only to wake up the next morning with just 30% of my battery remaining. How the fuck had my phone used so much battery while I was sleeping?? I checked which apps had used all that battery and to my surprise it was Google Maps and Android Auto. 6.5 hours of "screen time" while I was asleep! Ok, something is clearly fucked with Android Auto here, but…