Note to Self: First attempt @ this type of post. Too many edits and mislabeled data. Not a clear enough goal.
Did prove different people pick out different areas of concern, which was part of the idea behind it, but needlessly complicated it I believe. Maybe a more common engine/vehicle would be more beneficial.
Stick to case studies or dedicate half a day to being sure everything is clear, concise and properly labeled. Have someone proof read it.