11. Give your car Spidey-sense
If you're one of those drivers who catches yourself periodically drifting into oncoming traffic or not noticing pedestrians until the last second, it's not a bad idea to add something like Mobileye, which is a camera-based system that works just like most car manufacturer's warning systems—because it's behind those, too.
12. Have your windows automatically close when it rains
If you like the idea of having your windows go up once your automatic windshield wipers sense rain, it's worth the five minutes on Google to see if other people with your car have done it. Most modern cars are a lot more customizable than you might think, and a lot of options you've never heard of are hidden within the car's computer system, waiting to be activated along with a bunch of other cool stuff that varies greatly from car to car. If you know anything about computer coding, this is simple to do yourself. If you don't, a shop can do it for you, usually in under an hour.