I've had a few instances where my wife has the key in her purse, which allows the car to be started, and I don't even realize I don't have my key on me. I drop

I've had a few instances where my wife has the key in her purse, which allows the car to be started, and I don't even realize I don't have my key on me. I drop her off somewhere and then notice. But both of our cars sound a loud alarm and show an impossible to miss message on the dash the instant the key leaves the car, so it's pretty hard to actually drive off without the key.