. >> reporter: ahmed benifa is a professor of engineering at san jose state. >> people are using them. that's why you have a lot more problem because you discover new scenarios that they never thought about it. >> reporter: he believes each hiccup is a chance for waymo to improve its product and acknowledge imperfections along the way. >> the company should be up front about it and fix it and say we know what's wrong with this scenario. we fixed it. it's not going to happen again. >> reporter: despite the latest bump in the road, he believes sb 915, a bill that would give local governments authority over where robotaxis can be deployed, would create a nightmare where an autonomous vehicle would be allowed in one city and then stopped at the border of the next city that might not allow them. residents have witnessed stranded waymos, too. >> i have seen waymo cars come up and go in at too sharp of angle and stop and not know what to do. >> reporter: but she also sees the up side of driverless taxis like for her daughter-in-law who takes late night trips as a nurse. >> i didn't have to d