Do you really think having every car on the road fitted with a nuclear battery would be a good idea? I've seen how poorly most people take care of their cars, and the thought of trusting them with a nuclear device scares me a bit.

One other problem with concrete is that at the "seams" (not to mention the cracks) between panels water can get through to the ground underneath. This can lead to localized soil expansion/contraction which causes stress on the concrete and accelerates the deterioration. If a lot of water gets through the ground can be unstable enough to allow the panels to "rock" then they don't line up evenly any more. I would think these large glass panels could be susceptible to the same problem.

....like the ability to listen to Emo music without wanting to jam pencils into your ears?