California speed limit for motorhome with toad

When driving a truck, or the motorhome in Calif on the open freeways I have never been bothered at 61-62 mph. I do not think I can ever get my wife to ever drive in Oregon or Washington again, as the only tickets she has ever received, were one in Oregon running with several cars with Oregon plates, and one in Washington running with a bunch of cars and a cop going the other way turned around and picked her out of the middle and gave her a ticket.