Fried brain?

I still find "fobs" for car ignition strange and different.  I have been inviting Lynn to drive off in the car when we are out to lunch and she did.  I asked a friend to give me a ride home and he did.  

But, I gave myself the impression that because I didn't have my car, I was locked out.  I accepted that impression uncritically.  It was about 20 degrees out and I wanted to get into my house.  I kept thinking that I didn't have my car even though at the time, I had the key to the front door in my pocket.  I finally got the key from the lock box and got in.  All the while, I had my normal keys right in my pocket.  Not a great performance.