On a motorcycle, reaction speed is all you have to save your ass and accelerating away from danger is a totally valid strategy in many situations. A car may not

On a motorcycle, reaction speed is all you have to save your ass and accelerating away from danger is a totally valid strategy in many situations. A car may not be able to squeeze ahead as easily in a bind because of its size but having enough reserve power still makes some maneuvers safer (e.g. overtaking a slow vehicle).