Mobile pharmacy bus. Inside is a doctor that can manage your joint pain and write your California Medical Marijuana card on the spot. This was the old way of doing things, before weed was fully legalized. But it's still popular because medical weed is covered by Medi-Cal (CA free healthcare for aliens, women and children) and you can get it at 15 without your parents. But this also requires you to cook your own edibles, and most Americans don't know how to cook.