ITS BETTER THAN EVER
You have heard have WIFI and now there is LIFI which 100 times faster than WIFI.This is established forms of wireless communication. You can download stuff and it will take a few seconds.
The US National Highway Traffic Safety Administration have developed a device that can monitor is the person driving the car has been drinking alcohol by there breath and there blood. if there blood level is to high then they wont be able to turn on the car
Driver Alcohol Detection System for Safety – Technology Overview