Why limit yourself to just a tandem? I'd think a quadricycle or perhaps a pedicab would give you more space for all your extra drugs and water. Plus think about all the non existant problems you cold solve with three empty seats or more! If you were smart about it you wouldnt need any extra boxes for shipping , just add wings and fly that **** yourself! Come to think of it you might need more empty seats. Or more drugs. Either way we need to start thinking bigger.