[pockets]

I've read a lot of professional articles that would disagree with you. Ideally sound should come from two points, left and right. deviation from that, i.e. two axis from a single side can muddle the sound. In practice it doesn't happen all that often, but if separating them was the best route people wouldn't put them close together. Bass is an exception because it is omnidirectional, especially in a car.

There have been high quality coaxes made and in those the manufacturer takes a component set and mounts the tweeter over the midrange driver. High quality coaxes are harder to manufacture than high quality components, so they are rare.

And if you care about imaging, you don't aim the speakers at the driver, you aim it towards the center of the vehicle, such as the dome light or even at the opposite seat (driver side speakers pointing towards the passenger, and vice-versa)