After the group is done with the transaction, they drive the cars north to the last settlement to survive an attack. There, Richard is to question the local population while Sean, Bart and the dogs make sense of all the footprints and prepare to lead the way where the mutants have withdawn. Also, is that the same direction as whence they came from?
SpoilerThis might be quite some distance, so the proposal is that Tariq and Richard drive both cars. Bart is loaded with all slugs this time.