I've said this in this forum before, so if you've heard it, bear with me.
Back in the 90s, Richard Clark had two cars that were simply incredible on the IASCA circuit. A Cadillac and a Buick Grand National. The GN was the later car for him. But you could be sure of one thing. If you were competing in his power class and you saw the Grand National roll off the trailer (yes, it was trailered to every show), you knew the best you could do on that day was 2nd place.
Those cars opened my eyes to what was possible with high end audio in a car cabin. Still some of the best sound I've heard anywhere, including many high end home systems.
Oz