the various catalogs I receive in the mail frequently have a male incontinence device, basically a balloon hooked with a hose to a bottle, to simplify it. that device stadium pal gives me question as to how it hooks and stays put where it is supposed to.
but I buy the urinal bottles at a home health supply co for $1.00 and enjoy taking a "new" one to keg parties to drink out of. :)
so that would certainly be one possibility as all you would have to do was pull over to the side of a road/rest area/walmart/any business and use it.
bumpy