This was obviously never going to work; I think it's far more interesting as a piece of morality theater and/or a psychological ink-blot test. Because who looks at a system like this (individual humans carted around extravagantly in an energy-intensive, 4,000-pound CO2-belching murder machine, on an expensive and space-intensive road created
just for them) and thinks, you know what's wrong with this system?
It doesn't generate enough energy. Mmm yeah, you're almost right. Sort of like how a violent person doesn't generate enough not-punching-people. Keep going with that reasoning. See if you can use the phrase "in the first place" in your answer.
It's fascinating. Obviously they seem to grasp the system has something wrong with it, and the problem has something to do with energy. But when that line of thought begins to lead them inexorably toward the conclusion that they should actually probably stop driving immediately, like today, they take a quick left turn into something else, anything else, whatever's available and "green" - SOLAR, let's do the solar. That'll absolve our sins. Hence, where do you place the panels? In the road, where the sin occurred.
It's like the dim awareness of our actual transportation/energy predicament, is in the cellar of their subconscious, knocking at the door to enter conscious awareness, but not quite managing to get the person's attention. The mental contortions required to actually like this idea, remind me a lot of the ones required to maintain various states of denial. The fact being desperately avoided of course is that a set of changes far more sweeping and less pleasant than they're willing to admit or allow, are going to be necessary.