Ridiculous analogies. Cars are already well-regulated and restricted in that you need a license to drive one and register them before you can drive them on roads. Same with smoking in that you need to be over 18 to buy cigs and other tobacco products. People except for some crazies don't buy cars and cigs in order to kill someone. Guns exist solely for that purpose. 

If there are no guns in Hawaii, criminals can't have them either. Anyone caught trying to smuggle them in should be jailed and then thrown out of here. We are a bunch of small islands about 2500 miles from the nearest land which makes it hard to smuggle them.