Great article, but...
You really should have signed up for a test drive before writing the article. It's easy to do and I took a couple of drives before springing for a Model S.
You'd have learned in a test drive that one doesn't "insert the key" into a Tesla. Like a few other cars, you just need to have the key inside the car, and then pressing on the brake will turn it on so you can put it in gear and go. Also, with the "tech package" you simply put the car in "park" and get out and walk away when you arrive at your destination. The Tesla takes care of itself (shuts down, locks up, etc.) until you return with the key in your pocket or purse.
Go get that test drive. But I'm warning you that you might get hooked!