Looking back there were a lot of people who looked like Marty Feldman by the time the driver pulled over.

This morning I took a wazz in a remote Welsh layby. I parked the car, then ducked under some trees into a little hidden culvert.
Unfortunately, someone had earlier had the same idea. There was a sloppy pile of hum0an turd, but with no accompanying evidence of toilet paper. I assumed no paper was available, so they just pulled up their keks and trousers, and off they went.
Quite a successful wazz with no interruptions, for me.
Unlike the story of my trip to New York,...

"The facts have changed", Rishi Sunak

Or with less risk of glass breakage, and a bit more discretion- one of these....

[Link]

A stairway to Heaven and a Highway to Hell give some indication of expected traffic numbers

I once saw a girl use a shewee at a urinal at a festival to avoid the queue at the ladies.
She got a round of applause.
Feckin impressive

Not at all, more I would say practical as spillage is to be avoided and conditions could be cramped....

A large sealable Tupperware beaker (dark blue) while u wear a rain poncho..... unbeatable.

After doing the business, you can surreptitiously empty it anywhere without most people noticing.

If u used it at a busy train platform, most feckers wouldn't even notice as they read their copy of the standard.

And if u did empty it at the terrace of a vegetarian restaurant ? Most people would just think that angry pink-haired Karen the chef had just strained her vegetables.

Eze Peasy at Anfield....