As robotaxi services expand into more cities and automakers continue adding driver-assistance features to consumer vehicles, more Americans than ever believe fully autonomous cars are on the way. But that doesn’t mean they actually want to own one. Gallup published the results of a poll on Tuesday examining Americans’ views on autonomous vehicles. Overall, the survey, which was conducted last fall, found that 31% of Americans, roughly one in three, believe driverless cars will be commonly used in the U.S. within the next five years. That’s up from 19% when Gallup last asked the question in 2018. Another 34% said they expect driverless cars to become common within six to 10 years. Still, even if Americans believe the technology is coming, most are not interested in personally adopting it. When Gallup asked respondents whether they would be likely to own or lease a self-driving car over the next 20 years, just 19% said yes.…