"Minimum Speed 200 hk/h - the products that surround us often have unused capacities, we only use a fraction of their potential." This statement would apply to about 70% of the gadgets and appliances I own. (The 5 year-old matchbox car racer in me misses the point entirely and wishes someone would make the loop-the-loop a reality.)
"Phantom Pain - in the capitals of Europe 18 square kms of office space is left unused. This equals more than half of Manhattan, or a ghost town of 50 twin towers." This is my favourite of the images.