Its already illegal to damage someone elses property or person with a vehicle, no additional laws are needed.

If this is illegal, they need to make car stereos, cell phones, old drivers and drive thru food illegal as well. There should be an IV you have to bleed in before the car will start.....We need to have "Driving while distracted" laws so people will no longer be distracted....

Seriously though, they need to actually do some studies on this before making laws to restrict what people do. Id say I drive even better when high, my focus is elevated, there is no road rage when high....it makes me a defensive driver and therefore a safer driver. This reeks of LEO just wanting a way to make money off the mj population.