With enough money anything is possible Andrew. My GM plastic car has it, and it is quite convenient. However there is a whole nuther set of little transmitters, and antennas stuffed between the rear bumper, and frame to run them. So, there is that. I haven't seen any aftermarket companies that offer this option, but TBH I haven't looked.
I stopped to get air in my tires, and the truck locked me out…Luckly, I had the keys in my pocket…which I do because I don’t trust the door locks ..l