Yes, what redmax says. Guys, look - the reason it may not be legal is not bbl length, but the fact that you're not concealing it and carrying it on your person. If you conceal and carry it on your person, then it's (probably) legal as your CCW (if you have a CCW). If it's in your vehicle, then (arguably) it's not on your person, as is required by the self defense act, in which case the other statutes apply, in which case it needs to be "open and unloaded." They *might* even could argue, as an additional reason that the self-defense act (CCW) doesn't apply is that it's not a "handgun" within the meaning of the self-defense act; i.e. that the definition of handgun is more restrictive in the self-defense act than in federal law, meaning designed to fired with one hand. Frankly, the "handgun" AK is NOT fired with one hand - I'd like to see someone do this and how well they can shoot. It's a very well-settled idea that same word or phrase can have different meanings in different areas of the law.
I would have to disagree with you here. It appears to me per the SDA that the ONLY reason it is not legal is the overall length of the weapon. If it was below 16" I could legally keep it in my vehicle loaded. (Including chamber loaded.) There are plenty of people that use their CWL for the sole purpose of keeping a loaded pistol in the car. (I'm not one however, as I carry a pistol on my person everyday, but would like to be able to have the AK pistol in the truck.)