Predator's gold - Philip Reeve

PREDATOR'S GOLD is the second thrilling instalment in Philip Reeve's
brilliantly-imagined creation, the world of the Traction Era,
where mobile cities fight for survival in a post-apocalyptic fuure.
When Tom and Hester's scrapyard aircraft is pursued by rocket-firing
gunships, they seek sanctuary in the speeding ice city of Anchorage.
But it is no safe refuge. Devastated by plague and haunted
by ghosts, Anchorage is heading for the Dead Continent...
"Big, brave, brilliant" GUARDIAN
Philip Reeve has won the CILIP Carnegie Medal, the Guardian Children's
Fiction Prize, the Nestle Children's Book Prize and the Blue
Peter Book of the Year.