Motorcyclists must respect cars, too. Recently I have had two separate occasions where motorcyclists have driven between — yes between — my car and another car in the next lane. This is on the highway with traffic going 60 miles an hour or higher.
The car drivers are definitely startled, and then they have to worry which lane the cyclist will jerk into. In Kansas it is even worse: no helmets.
These motorcyclists are their own worst enemy.