[HoE] Posse Cohesion Crisis! Alert!

[twilight@vbe.com]

K folks, here's the problem.

    My posse consists of one Ravenite Bounty Hunter, a Faraway Syker
Vet, Two Road Warriors, and a Amnesiac Templar (can't remember who he
was before the bombs).

    The problem is a matter of cohesion, I've reach the point in the
campaign where the players want/need to split up.  (Read: I don't want
this) The Ravenite is gunning for a Sawbones who didn't ante up on a
deal--in Northern Nevada, the Road Warriors *main source of transport*
want to find the Convoy, which is in The Dakotas, and the Syker is
returning a batch of recovered info to the Librarians in NorCal.

    In reality, the posse is only together because they sort of bumped
into each other in a time of crisis and needed to rely on each other to
survive. So, currently, there isn't much glue to hold them together.

    Do any of you guys have a clue as to how I can get them to stay
together in reasonable/realistic terms without being unfair? I really
like the Road Warrior's book adventure and Infestations and I want to
get them to that area.  Currently they are in Arizona's Sonoran desert
w/ no fuel and low on food.  I don't like a lot of 'downtime'.

    Any ideas welcome.  This list has been a great inspiration at times,
and right now my mind is a little stumped. Help me out!  Thanks!

-Guy