Wait, are they also seriously promoting using them in parking lots? Well, I suppose if it is a business only open at night... or a not too successful business. I can tell you at my office there is not a single open parking space most days of the week. Only places that would be generating power during the peak daylight hours would be the travel lanes between rows. Now, as a business park, there are very few cars there on weekends, so weekend potential is good - but shopping areas and other consumer locations that are open 7 days a week? I suppose the same could be said of the actual roadways themselves, if its in one of those areas that sees multiple lanes of bumper to bumper traffic that barely moves most hours of the day, that has to hurt the potential power generated.
All that is probably beside the point, wonder how flexible this stuff is. 7mm on top of the existing road surface, and they claim it can withstand even heavy truck traffic? When I see the holes blasted in the road surface and even worse, the washboard surface created by heavy trucks, I really have to wonder what happens to this 7mm layer as it gets bent repeatedly. Maybe this is less of an issue in other countries of they don't allow as heavy a truck on the roads, but it would be a major problem I think if they tried this in the US.