Watch the students of Israel’s Technion compete to race elastic-band powered boats (built in advance) to travel eight meters, anchor by means of a magnet, and fire a jet of water into a funnel from a distance of three meters – all this is in the shortest possible time and with smallest number of rubber bands.
http://pard.technion.ac.il/2015/06/21/dr-bobs-technobrain-competition-2015/