General Motors' MyLink rivals Ford's Sync infotainment system

General Motors is introducing a competitor to Ford's Sync infotainment system that will provide text messaging, e-mails, traffic advisories and other connected-car functions.The system, called Chevrolet MyLink, will let motorists link their smart phone and its functions--such as texting, calls, music or navigation--to the vehicle's voice recognition software, sound system and navigation