Water doesn't stop zombies, you won't be able to stay long and that lorry's going to run out of fuel fast, and is from Glasgow. I live not too far from a prison, my school has an armoury and a minibus, and I live down the road from a guy with a motorbike. Roll to the school, load the weapons into the bus and buy my way into Berlinny. I'll be fine for a long time.