I'll have a motorcycle for navigation and the pistol for weaponry (even if I don't have ammunition, I could always resort to a little something called pistol whipping). I'll have to be weary of the fuel consumption of the motorcycle though.
Meaning that if I'm gonna kill an Australopithecus, I'm just gonna beat the shit out of them like Stewy beating the shit out of Brian. https://www.youtube.com/watch?v=wJ02N0lAIos