You have a free right to travel, you don't have a free right to use an automobile on a public road, that is made of any size, material, condition, or quality, while driving under the influence of any drug you please, at any speed you please, however you please... all while jeopardizing everyone else around you. The fact that it's intentional is why it's not a right to jeopardize my life, because one decides to drive a rusted pile of shit, high on smack, after downing a half of liquor.
You don't have the right to directly threaten my life. This is why it's not one's right to "do as they please" while conducting travel on a public road.