ok ready. i think this is correct but im sure someone will have something to say about it.
...when sitting behind a long range rifle preparing to engage a target 800+ meters away a million things are running through your mind, one thing is ballistic coefficient.
objects that travel in one way or another have a coefficient. 2 main factors on a bullet is Drag and gravity. well with a car we have no gravity to change except to make your car lighter, but drag we have a bunch, guns and cars.
so what is coefficent? its a rating between 0 & 1 ex. .551, this is the ballistic coefficient of a m118 LR .308 bullet.
this is all based off of math formulas to take similar objects and place them on an even playing field to determine which on is better. whether its bullets, cars, planes...etc.
so a mustang has .38 out of 1 rating. and a corvette may have .65 out of 1 rating. so when all the cars were compared through hundreds of formulas the corvette is better is sense on coefficient.
these math formulas arent just "which is faster in the 1/4" it goes in to extreme detail on millions of things about the vehical. HP is only one of the 100s of factors applied, by no means is it the most important. i would say vehical shape is rated more indept then any thing else.
can you change your coefficient? sure, just a good spoiler could just pop you up to .40 out of 1.
I compared to bullets because i know that way better then anything else. I am using my best judgement on all of this because I have never heard of vehical coefficients but i know all kinds of coefficients are the same.
BTW nothing in the world is 1 out of 1. that would be an absolutely perfect object.