Well, I've heard many different monikers in my lifetime, but "ukulele" is a new one for me. And, apparently, it rather slipped by Dear Abby as a woman wrote in about her husband's love of being nude. She writes that he goes out the front door that way for a variety of reasons. And that the police have stopped and lectured him a number of times for "playing his ukulele"
Now, evidently, he's never received a ticket for driving and playing. And none of their neighbors have complained about his venturing out in plain sight. Abby responds that many people are nudists, but her husband may be an exhibitionist and the wife needs to be a bit more forceful in warning him he could be arrested if a neighbor is offended by him strolling down the street.
Well, the man is obviously not ashamed in any way, shape, or form; he thinks of his body as natural. Personally, I applaud him - and I applaud the cops who've stopped him while he's driving naked but not arrested him or given him a ticket, because it really is quite a common activity.
On long road trips I much prefer to go pants-less because it's more comfortable, particularly when the boner develops due to the constant vibrations of the road. It's an uncontrollable, physiological reaction; the normal functioning of the body. A car's stiff suspension causes a stiff cock.
And there have been plenty of times the continued stimulation causes that heavy, full sensation in the nuts and the urge to relieve it develops into a need. It's almost an unconscious thing when the hand finds the cock and begins to stroke.
Playing with one hand while driving is fine. But, I suggest if you get too caught up in it, please be smart enough to pull over somewhere to finish the job