Mediums For Digital Marketing

Currently, there are some pretty standard mediums for digital marketing, being computers, smartphones, tablets, and to some extent, television. But how will this change in the future? How will marketers find new ways to market their product to consumers outside the normal venues. When you think about the rapid changes in technology today, I believe there are huge opportunities for new mediums. Digital marketing is already being used in planes and elevators, but what is next? How about cars (with larger screens like Telsa)? Could you one day turn on your car and before the screen opens up you are hit with some digital marketing? What are the limits?