Why do keyless-start vehicles have key fobs that don't need to fit into an ignition type device in the vehicle to start it? Today, I got into my car and put the key fob in my pocket. After 10 miles or so, my wife took over the driving whilst I visited a friend. The fob was still in my pocket. My wife drove another 10 miles, stopped to get some shopping and could not restart the vehicle as I still had the keys! I'm in the doghouse now.