Great point. It is also a matter of perspective. On many roads the cars comeing in the other direction are not passing much more than thee feet apart. In my state a motorcycle will split the lane with only 4 feet between cars. On the freeway a bus mirror may only be two or three feet from a truck mirror while traveling 65 down the freeway. It is something car, truck and bus drivers have learned to live with for years almost as second nature. I ride on expressways with 60 and 65 mph traffic almost every day and yes sometimes it seems closer than others. But the car drivers and truck drivers know the laws as well as cyclists and very few are willing to go to jail by running you down simply because they don't like cyclists.