It is naive to think that cops will stop someone for texting and write them a ticket. The only way to stop the foolishness of texting and/or talking on the phone while driving is to make the phones inoperable if traveling at any speed greater than 1 to 2 mph. The technology exists, it is just not used because no one would willfully buy into it. The kid is just another Darwin candidate sorry to say.
Simpler to remove the abilty of mobile phones to send and recieve wireless transmissions. Instead build a network of "landlines" that you plug your phone into.