Hey, ever wonder if the power went out and never came back? That is a constant theme in my time trips to the future. Perhaps we should all invest in generators.
Also, over and over when going astral to the future, I have seen a dark city scenario. That is plainly like a blackout and the highways are empty. This pitch dark city seems abandoned and deserted. OK, one possible reason is that hackers are targeting the electric power grid.
Without electricity fuel pumps would not work so the filling station would close. This would explain why highways are empty. Food in grocery stores would rot without power. However, why do people leave the city?