http://www.thedesignblog.org/entry/safest-way-to-glide-a-simulator-of-course/

Tom Wilksch's Portable Gliding Simulator offers two improvements
over a traditional simulator installed in a fixed location. Built on a trailer
base, this can be towed to public events to serve as a recruiting tool -
offering a taste of soaring to many more people. And since it folds up tidily,
it doesn't require dedicated storage space when not in use.

http://www.student.designawards.com.au/application_detail.jsp?status=2&applicationID=5371