I know, I know!!! Even though some modern rice burners are liquid cooled and have radiators and such, motorcycles didn't for most of the 20th century. They were air-cooled (many still are) and need to keep moving to generate air-flow over the engine. In traffic jams, air-cooled motorcycles could overheat and actually damage the engine. Lane-splitting allowed motorcycles to ease through traffic jams where they had room.
I wish we had lane-splitting in MN.
It’s the only part of the road without potholes.