i'm with pud and DMT on this: on a long drive, ideally in the great basin -- with the radio off and all the windows down. A/C is for... um, lady cats. popping over the toiyabe's near austin, nv seems to have especially good 'head rays'.
BITD, the gokyo valley, khumbu, nepal. more recently, one has to tend way west for the same effect. best if you find that your own self.
i think we should all pitch in an send nutjob to Ely via Hwy 50 - with no radio or A/C. i'll start the movement by fronting him $20 for 12 cans of tuna and 4 lbs of tortillas. water is free -- if you know where to find it.
nearly died on that little one on the left -- was saved while wandering and mumbling at the base of it by a woman twice my age and half my size -- in a storm i hope you never endure. pisser i can't speak tibetan.