Modders have stepped away from iPhones and moved onto Teslas, by the looks of things, as now you can jailbreak one of Musk's famous cars.
You can upgrade some features on your Tesla for a bit of extra cash, like gaining heated seats and better acceleration, but thanks to the jailbreaks modders are getting these features for free. In more extreme cases, people have also found you can break geological location restrictions, meaning you can use the self-driving mode even in regions where it is banned.
Researchers have found that the attack they used to jailbreak a Tesla can be done by "people with some electronic engineering background, a soldering iron, and the ability to purchase additional hardware for about $100." Of course, it isn't recommended that you do this to your car, but it does open up a new range of possibilities for owners even at the risk of their vehicle.
Read more here if you want all the details.