A majority of Americans, Australians and Britons believe that connected-vehicle technology will make driving safer, but most are also concerned about security and privacy.

A University of Michigan poll found that about 30 percent of nearly 1,600 online respondents in the U.S., Australia and the U.K. are "very concerned" about system and vehicle security breaches from hackers and about data privacy in tracking speed and location. Another 37 percent are "moderately concerned" about these issues and nearly a quarter are "slightly concerned."