Just in from Stockton, Mary parks her car and enters the downtown Oakland coffeehouse -- but she hasn't come all this way for a cup of joe.
Instead, she peruses a menu of dozens of strains and preparations of marijuana, all grown in California, all taxed, all legal. Producing a wad of cash and proof of her age -- but no doctor's note -- for a fragrant ounce of "purple kush," she departs a satisfied customer, perhaps grabbing a snack at a nearby restaurant before hitting the highway.
