<p>The key may be “intelligent” but sometimes the driver is not. I was visiting my elderly parents and used my mother’s car to run some errands for her. I stuck the key in my pocket and went about doing her business. I later drove 2 hours back to my house. Imagine my surprise when I stuck my hand in my pocket and discovered the smart key. Unlike keys, which I would have just thrown on the table when I got back, the key stayed in my pocket, where I forgot about it. The next day I had to make the 4 hour round trip to get the key back to her.</p>