Trevor considers his options. Things look grim. his legs still hurting from completing a marathon, he knows he can't move fast. The pistol won't frighten anyone, the rifle is useful to snipe at someone, but he has no intention of doing that.
So the shotgun is his best option. - Option 3
With a quick glance around, he darts a hand into the vehicle and grabs the shotgun before hobbling as fast as he can into the deeper shadows.
Somewhere out there in the city that has lost all hope, where madness has consumed everyone, his wife and his father are also trying to survive. Clutching the shotgun close to his chest he sets off, hoping to find them alive.