Automakers are feeling bullish about the future of self-driving cars. But most Americans aren’t so sure.   

Three-quarters of U.S. drivers would be afraid to ride in an autonomous vehicle, according to survey results released by AAA today. The 115-year-old nonprofit driving and travel group says one reason may be problems they’ve had with safety technology in their current vehicle.

“U.S. drivers may experience the driver assistance technologies in their cars today and feel they don’t work consistently enough to replace a human driver—and they’re correct,” said Greg Brannon, AAA’s director of automotive engineering and industry relations.

AAA says one of its priorities is to evaluate the current technology, including emergency braking, adaptive cruise control, and automatic steering. All of these technologies require drivers to give up a little control of their vehicles, and that’s a scary thought to many Americans, Brannon said.

The survey shows the auto industry has to do some selling if the reality of self-driving cars is going to come true. Car companies are aggressively investing in automated-vehicle technologies like sensors, bulked-up on-board computers, and high-definition maps. Executives frequently tout the ability of self-driving cars to reduce highway fatalities while also opening up new business opportunities in car-sharing and taxi services.  

Baby boomers were the demographic group to most likely to express fear (85 percent) compared with millennials (73 percent) and Generation X (75 percent). And women were more likely to be afraid than men (85 percent to 69 percent).

Experience with new technologies may be the key to easing fear, AAA said. Drivers who own cars with some of the autonomous-driving features were 75 percent more likely to trust the technology than those who don’t.

“While these technologies will continue to improve over time, it’s important that consumers understand that today’s systems require your eyes on the road and your hands on the wheel,” Brannon said.

AAA’s findings were based on a survey of 1,012 adults conducted in January. The margin of error was plus or minus 3 percent.