And now, via CNET, we have learned that Toyota has patented something interesting that could make production one day. Described as a "vehicle fragrance dispenser system” in the patent application, this system can dispense multiple fragrances in order to accommodate the nasal preferences of all occupants.

Of course, not all passengers will like the other fragrances chosen by others, so Toyota came up with a rather simple solution: a deodorizer. Seriously. It can deploy the deodorizer once someone exits the vehicle and then revert back to the original scent. Interesting. By now you’re wondering about the tear gas part. Because the system is designed to detect occupants, it can also detect occupants who shouldn’t be there. You know, like thieves.

Once the system detects an "illegitimate engine start,” according to the application, it will dispense tear gas instead of a pleasant fragrance.