"Well crap. Let's see if its a nail or something or if you just popped a tire loose. All the other tires look a little low on air."
Selene stepped down from the hood of the truck and walked around to the flat tire. Lifting that corner of the truck with one hand, she used the other to spin the offending tire around. "I don't see a nail or a cut or anything, let's put some air in it and see what happens. You don't have a spare so I'm guessing you don't have a pump, either. I'll be right back."
She took off at vampiric speed, a speed that meant she vanished from the sight of most human. In a few seconds she was back, holding the air bottle she used to service her own pickup.
"A little sealant," she pulled a can out of her coat pocket, "and air the thing up. You really need to pick up a couple of spares." Selene suited actions to words and quickly had the flat inflated and the other three tires aired up to the proper pressures."
"That should get you back on the road. Headed for the prison or just passing through? I keep the zombies around my house thinned out pretty well, but the prison seems to draw them. I can ride along with you if you like and get you through safely."