Cell phone blocking can and probably will happen. And, you can be sure that car buyers will have to pay for the technology involved. At the moment, these are just recommendations and, if actually taken to heart, would take years, and a number of production cycles to be implemented. At least, the recommendations don't include the act of making hands-free calls or text messages even though those have recently come under fire for interfering with a driver's attention span. --Written by Gary Krakow in New York. >To submit a news tip, send an email to: email@example.com.