Four? Within an hour? San Diego, California? I count three and the only way you could get to them in an hour is if you own an airplane or live in the far north end of san diego county which would put you an hour north of downtown san diego at best and not near anything very cool. Unless you count the shrub and avacado farm in Fallbrook, (very cool). "it gets you nowhere if the other person's tail is only just in sight for the second half of the conversation."