Russian Ivan's Mystery Tour (30 min timed book):
Cover: Battered, bust up school bus with a bearded lunatic at the wheel (Ivan)
Here's an idea for a special book I just had whilst playing with a non-DMU account with a 230% odd Long Way Home, and noticing the glorious 10 hour return leg. A special, reasonably rare alternative to a Long Way Home. Basically the +200% xp would be argumented with a 5-10% chance of finding quality items, and a random +50-99% infected damage.
Basically by selecting the timed book you agree to some esoterical task(s) from Russian Ivan -perhaps at a random unexplored building suitable for your level- that Ivan is struggling with himself, hence the infected damage bonus. You keep everything you find inside, you clear the building for him.
Given Ivan is driving you there the DMU bonus wouldn't apply, though you could shout as a backseat driver (enjoying a shortcuts bonus), this being a book for a mission or two before finishing the day's Dead Zoning.
Expand: With a little imagination, this could of course be the doorway to random unique areas designed by Con, only accessible by the book, given Ivan want's to keep their location secret; he's just having a little difficulty with the calibre of infected at the location himself :)