In the later years of my Dad’s life he had heart issues with the doctors putting him on water pills. So my Dad acquired a good knowledge of where the bathrooms were in his daily life. However on one road trip he was using a urinal instead of making frequent stops, a revised Clorox bottle perhaps. Plus they weren’t stopping to empty it, he would tell the driver to slow down and then dump it out the window. In one instance the driver didn’t hear the request and Dad proceeded to do the dump any way. Apparently as a result of this, the car behind them had to turn their wipers on. I do hope they didn’t have any windows open.