Non-"Remote" key.

[bd-850]

could be tricky and get a few other manufacture blank car keys and put them on a keyring, the thief wont know what car you have and then hopefully get turned off and leave the keys

[LZY_EYE]

I don't think you can physically lock the car if the key is inside.I know remotely it won't as once my wife left her key/bag in the car and we couldn't figure out why the system refused to lock. I suppose it's to make sure you don't accidently lock the key in the car and then anyone can open it by placing their hand on the front door handle.

You have a smart key. Your car has proximity sensors in it to ensure that the keys are not locked inside. Cars with a conventional key do not have these sensors.

Generally with a conventional key you would lock it pressing the button on the key which means almost zero chance of locking your keys in the car.

If going for a non electronic key, you would need to lock the car the old fashioned way, and putting the key in the door lock