Sounds like the perfect place, but unless you are wearing a skirt that would not be concealed, right? (Hey, what do I know - maybe you are a female!)
..the guy in the suv has time to pull his .45 out from between the seat...
Thinking of all the vehicles and .45s I have owned, I cannot imagine keeping one between the seats unless it was in a holster and even then it would likely shift positions. Seems like it would take at least 2-3 seconds to get a firm grip and get it pointed out the door even if it was where it should be (didn't shift around). Not that I have a better idea when driving except maybe something like a hammerless revolver in a jacket pocket.
The holster is mounted under the dash off my right knee. I can pull it out while turning to leave the vehicle. The perp doesn’t see it until there are at least two slugs in his belly.
Another technique that works is as you leave the vehicle, shove yourself against the inside of the door, with the gun between you and the inside door panel. Turn and fire. He may even pull you in that direction.
By the time he’s in the car, he’s got slugs in his kidney. Follow up with head shots, or he may get a round off. Two at least. Call 911. Make sure your weapon is on the ground between your feet and your hands are palms out away from your hips so that LEO’s can see that you aren’t armed. Don’t put your hands over your head - you look like the perp.
Insist on an attorney. Don’t answer ANY questions, but do that as respectfully as you can. This idea that they are going to let you go right there because you were defending yourself from a carjacker is wishful thinking. A homicide has been committed and you need to defend yourself from the State at this point.
It’s not the ‘Justice System’, it’s the ‘Advocacy System’. Nobody gets justice, and you are punished according to your ability to defend yourself in court. It must be looked at this way. Justice is an occasional byproduct.
Either way works. Smaller guns are better (.22’s and 9mm) because you can shoot from the hip faster, more confidently, and generally more accurately than with the .40 or 10mm. Revolvers are no good for this application.