Addison and Ben race across town in a stock car with only netting over the windows, not glass. Ben's hair should have been stirred by the wind, though Addison being a hologram would explain her hair staying put. Not to mention that they should be screaming at each other to be heard.
At one point, Ben says "I'm gonna call 911." In 1976, only about 17% of the entire USA had 911 service. California's statewide system initially launched in 1972, but wasn't fully completed until 1985.