Zombies and a motorcycle

Not much to remember, I just remember that the world was overrun with zombies, I had left a city to find a motorcycle that belonged to one of the survivors that was hiding in a building in a city.  I can't remember why, but I ran into a barn (In a town some distance from the city) and found the motorcycle in the rafters.  I went into the rafters as zombies came in, and luckily avoided being captured.  I know I had a plan to escape the rafters, and somehow get back to the city, but I can't remember how I was going to do it.  Anyway, a short dream but I will take what I can get.