Automakers across the United States and around the world have come up in recent years with innumerable new features -- “bells and whistles” is the popular name for them -- which entice buyers and make driving more pleasurable and convenient. Heated seats and steering wheels are great for those cold mornings; keyless remote entry devices make keys almost obsolete; and navigation systems take the guesswork out of getting to an unknown location. But a device that could literally change the driving experience is now being touted by the government -- that’s the only thing that gives us pause -- and could drastically reduce the number of accidents on the road.