It's a helpful read. Over the years I have read so many car audio and home audio magazines that talk about imaging, sweet spots, overlap, crossover points, cancellations, seating positions, speaker height, speaker placement and distances, cones vs domes... so much information it started leaking out of my ears.
It's harder in a car to get physical distances and positioning where they need to be for proper imaging. My home was easier. I have two Bose 2001 speakers on stands aprx. 7 feet apart and aprx. 10 feet in front of me and they are head high while I am sitting. They are complemented by a Yamaha active servo sub over near the corner of the room about 12 feet away. Sounds great. The car is going to be rough because I plan to put the speakers in the factory locations (hidden), so off-axis for the most part. Challenge accepted.