What do audiophiles do in their cars?

Yeah, I should of mentioned that my GMC is a 2008 in pristine condition. I drive my vehicles into the ground, so the cost of the gear is worth it in the long run.  Not to mention the JL Audio Amps were in my last vehicle as well, and I moved them over to this one - they have been kicking for 20 years now with no issues.....

Pioneer head unit that runs Android Auto that I can stream Tidal, or downloaded hi-res from the Tidal app if I lose cell service (I live in Alaska), as well as flac from a USB drive.
Morel Elate Carbon 3 way component set up front, and in back as well.
Custom A Pillar Pods for mid and tweeter. 
2 JL Audio 10W3v2 subs in a JL Audio Stealth Box.
3 JL Audio Class A/B amps.
JL Audio DSP w/ Time alignment and Parametric EQ for every channel. Fully sound wrapped in DynoMat (roof, floor, all 4 doors).
Upgraded Alternator, and dual battery under the hood.
Its amazing. I have had similar systems in every vehicle I have ever owned. The system is tuned to be punchy but very transparent. I’m not into the high SPL "boom" that bugs the guy next to you at the stop light. Having a system like this in my vehicles was also a "gateway drug" for my kids to get into hifi as well because they were listening to good sounding systems at home, and in the truck their entire lives.
Having a system like this was also essential, as I am a working musician and will learn songs while driving, and the stock systems in every vehicle I have every owned just wouldn’t cut it when you’re trying to isolate a single instrument in the mix.....
That being said, the best stock system I have ever had was the Bose system that I tore out of the GMC pickup I drive now :-)