You're kidding, right, Jeff? You actually believe this piece of a car wash is BETTER than a real bidet? How so? (I'm going in never-never land, now.) I'm trying to visualize how it might be used in a way that, er, preserves the dignity of the user. If one tilts one's body to the left (the opposite side from where the water source is --- to avoid the hose dragging across your bare legs) I guess you are to reach down into the bowl with the gun in hand and take a shot. Since you can't see there, it seems unlikely the first pull of the trigger is going to score a bulls eye. And to keep the bulls eye from being your eye, better clamp your legs together or squint hard.
So your body goes into servo mode (like steering a car around a corner) and by feel, with each successive shot you get closer to target. Meanwhile, you're wasting water (very un-green), soaking your entire bottom (more TP to dry, also very un-green), and based upon the law of gravity, dirtying your gun hand. This probably wouldn't last long, however, at least where I live, as you would quickly use up the air temperature water in the hose and be greeted with the new, 53 degree water fresh from the well.
An alternative position might be to raise yourself into a squatting (sort of third-world like) posture with one foot on each side of the toilet seat. While this would allow greater accessibility and accuracy, I would be concerned about overspray on the walls, as well as falling off --- or in. Probably not a good idea for the elderly.
I dunno... I think I'll keep my Toto, wireless, remote controlled, on demand heated water, variable pressure, microprocessor controlled heated seat, variable position, retractable nozzle, carbon filtered deodorizer, warmed air butt-dryer bidet seat--- but thanks for the info on a new idea in personal sanitation.
(More later on the difference between expenditure and conservation of resources.)