Worst electronic invention of the decade, cell phones. Number one cause of distracted driving and 'accidents'. In reality the word 'accident' should be replaced with something else because 99% of accidents aren't accidents at all but on purpose crashes, excerbaited by contributing circumstances and cell phones are number 1, followed by driving under the influence.
Most states have enacted laws against cell phone use while driving but that don't seem to stop the offenders anyway. If I was LE, I'd need a pile of citation books.....