The Californian:  “a big white bus was waiting to whisk 14 seniors off on a new adventure: a shopping trip at a medical marijuana dispensary.  ‘I don’t want a buzz,’ passenger Kay Nelson insisted, shaking her silver head. ‘I want relief from pain.’  Nelson has been a member of the Laguna Woods Medical Cannabis Club for two years. She uses a vaporizer and oils supplied by the senior-run collective to ease her chronic backache.”