Well, when the driver runs out of...um...fuel, he can stop the bike and ask a passerby to supply some.
Get your motor runnin.
(grunt, grunt)
Head out on the highway
(grunt, grunt)
axe your date to suppress defecation until after you pick her up. then have a dutch treat date, so to speak. feed her a lot of fiber, burritos andbeer, for the ride home.