Interesting since I had almost a close call.
I have a Camry XLE 2002 that I bought it in December 2001. Just after one month I bought, someone got into my car. He didn't break any glass or took any property from the glove boxes, but things are all misplaced. I had some money and a cell phone and some tools. He didn't touch it. The only reason he couldn't drive my car away is because of the Engine im-mobilizer. I think he has the key to that car. I didn't change all the lock cylinders since I have to spend few hundred dollars and it is not possible to get the chip code for him to duplicate.
I took my car to the Toyota dealership and they actually questioned me about all other keys. Finally, the mechanic explained how they get the duplicate keys. Some of the crooked guys work in any dealership who can help these guys. Just like when we lose keys, we can make a key if we go to the dealership with the VIN of our cars. SO he might have written down the VIN of my car and made a key with his friends at any Toyota dealership. However, nobody can duplicate the chip since the code is unknown. If you lose an electronic key, they have to reprogram the code for the car all over again. That is why he can get into my car but no way he can drive the car away. Also, he may be looking for any second key that usually people keep in the car.
Almost after one year he came again, but didn't take anything at all. After five years he got into it again, that time he took all the 6 CDs in the CD changer, money and all tools and trashed everything inside. The first two times he didn’t take anything. I think he didn’t want to alert me at all, so that I don’t change the lock cylinders or looking for a probability of leaving a second key in the car. Third time he got irritated and got what he can get out of it.
I think this guy may be a prisoner and might have been in jail. Whenever he gets out of the jail, he does it again wherever he can. Probably he is in jail now, and I didn't see any break in for the last few years.
So, from this experience, I wonder, you have all the THREE chipped keys with you.
There is no way anyone can drive away without that chipped key. Even if he hot wired it, the alarm will come off when he cut the wire, or disconnect the battery.
Or pulled away with a tow truck as the above post, but I doubt that because it is from your home driveway and a residence area, not a public parking place.