Like something out of a science-fiction flick, the computerized Cadillac SRX drove itself along Western Pennsylvania roads and interstates on Wednesday, delivering its human passengers safely to Pittsburgh International Airport.

“This is the future of transportation,” said PennDOT Secretary Barry Schoch, who was part of a group that rode in the specially equipped, autonomous car for 33 miles from Cranberry to the airport as part of a demonstration by General Motors and Carnegie Mellon University students and staff. “I have 2-year-old twins, and I’m not sure if they’ll be driving the way we are now.”