It would deft be one of these!
Check out this Russian Tarus 2 wheel drive motorcycle!,
weighs 110 lbs, so light enough to lift with one hand,
it also floats, and can be dismantled and bagged... what an amazing piece of kit!
Prob cannot be made road legal here in the UK but at 725 Euro once it is in production it could be a cool wee toy for around the Golf Course at my work! :)
Review here; http://www.insella.it/news/tarus-2x2-moto-russa-smontabile-trazione-integrale-video
This motorbike instantly reminds me of another amazing Russian offroader i blogged about: The Vityaz ATV
with a steel fatbike and a Tarus 2x2 motorbike on the back were ready for the Zombie Apocalypse...
But don`t forget about the "Ze War" when it comes to Zombies...