I dirve on two major roads (major for this area 2 lanes) and one is posted 60 and heavely patrolled. You can get away with 65 but not 67. The other road is posted 55 and is patrolled but you can see them coming a long ways away so you can cruise around 75 - 80 but you have to watch for the aircraft. It so sucks with big brother watching you all the time. In the city of Sacramento, San Fransisco, LA etc.... you have to drive 80 - 90 to pass any one. But around hear going 65 in town you are passing most everyone you see and in california the passing lane is what ever lane that is open because there is always someone poking along in the passing lane or third lane etc.... So find a clear lane and go for it, just look behind you before you boost.