The Colorado Air Quality Commission could vote to adopt a zero-emission vehicle program, similar to a program already in place in California. The Zero Emission Vehicle program, or ZEV, would mandate car manufacturers to sell more electric cars in Colorado. The percentage will start at under five-percent, and then grow to eight-percent. The Colorado Auto Dealers Association says it is opposed to the plan, saying it will limit customer choices and increase the cost for new vehicles. The commission vote is scheduled for Thursday.