All motor vehicles should have a breathalizer test to start the car. like the test needs to be passed for the car to turn on. We have some of the most amazing devices and technology in 2016 but still have yet to invent something to stop drunk drivers, and stop people from leaving their kids in a hot car.
There is a device that can keep people from driving drunk but it's usually only put in cars of people who have multiple DUIs or are alcoholics. It's a type of breathalyzer that won't allow the car to start of they have had any drinks.
I think we should have something that when your in the car it shuts off your phone. So you can only contact emergency contacts if needed. Also front seats if they aren't wearing their seat belts it annoys the crap out of you we should have a back seat thing like that as well so if kids unbuckle we know.
What @isabellesmomma212 said haha. If you have multiple DUIs or something like that there is a device just like you described that they have to blow in to before driving. I think it should be mandatory too haha.