There's no solar output data from the tractor demo panels because IMO those are completely fake and they were only testing the glass, those panels used there don't generate any power and never were designed to. Just more of the scam playing out.
Which just makes it worse - because you certainly COULD make panels in a roadway that generate power, no one is disputing that this could work. The issue is longevity and poor output per cost compared to ordinary existing panels mounted off the ground and tilted at the proper angle. That these idiots have spent all this money, and not just scammed from crowdfunding money but MY tax dollars and still can't even get something as simple as the LED pattern to actually work reliably makes them the worst kind of charlatans.