We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Adrian
saying something like:

Bear in
mind that a lot of camper vans have been targeted for robberies by
scrotes who fill them with gas to knock the occupants out,

I heard that too, but I never came across one single documented incident
where it actually happened, all the stories of it were just stories.
I await the real case of it occurring.