It's my theory and I think it's a damn good one.
what could be more likely to bring to them their required desire for notoriety than murdering young people, tourists, no less, the lifeblood of the province, for no reason whatsoever? .. To start a chase across country , for days? . Notoriety was their lifeblood, and in their end, their death song, too.
Hard to think up any other more definite process than that, to bring on a whole heap of notoriety, and as for malicious intent, what more could one do to portray malicious intent than the insouciance leaving of the bodies they mangled with gunshot by the side of the road, for some other poor wretched innocent by stander to stumble across? They wanted it known what they did. No hiding the bodies from the gaze of the public, oh no. Leave them out there , right there on the road shoulder, maybe even do a bit of artistic re arranging of the bled out bodies, as the road worker who found them hinted at.