"Interpretation" means that you still can't find any Georgia Statute, court case, or article that uses that phrase or concept.
Try this, the next time you get stopped in your vehicle, by a cop with 33 years experience, keep the windows rolled up, and tell the officer you would rather not engage him in conversation, because your vehicle is an extension of your home, and well established court precedent has established that you do not have to engage the police in your home. Being as you are on the same page, he will wish you good day and send you on your way,
Oh yeah. The law is clear that you can be drunk as a Lord in your own home or even out in the yard and you are not violating the law. Try explaining to the good officer that being as your vehicle is an extension of your home, the same principal applies.
Just because someone interprets the law by using the phrase "extension of your home" doesn't mean its a blanket coverage. You are correct in that a vehicle can be searched without a search warrant unlike a home. In that sense the motor vehicle is not an "extension of your home". HOWEVER, the phrase "extension of your home" is NOT false when it comes to carrying a firearm or defending yourself from a villian. Hell, I can say "there is not a single difference in a motor vehicle and a residential struture"........when it comes to carryng a firearm without a permit in GA. In the sense that one is a self propelled vehicle and one is a dwelling set on a foundation of concrete that phrase would be wrong.
Nobody implements the law without interpreting it first. The phrase "So what does that mean?" is said in every courtroom every day in America when statutes are read.