OK, I usually focus on apps and tools that are already available for people to incorporate into their work. This, however, is just too cool not to share. I found it in a list of Netexplo Award winners for 2013.
General Motors’ R&D Department in partnership with Jerusalem’s Bezalel Academy of Arts & Design, have been working on WOO, a technology that turns car windows into touch screen computer devices. The details are in this PDF. The video below provides a good overview.