I actually got curious and have a friend hold my key outside the car while I try to start the engine, and I couldn't. The car correctly detects that the key is

I actually got curious and have a friend hold my key outside the car while I try to start the engine, and I couldn't. The car correctly detects that the key is not inside with me. Also, the dashboard will always tell you if you are inside the car but key is not detected. So even if it miscalculates where the fob is and let you start the engine, that key-not-present light will be on as you drive off.