This was emailed to me by the I.Mech.E. today, and some may find it interesting.
http://ondemand.imeche.org/on-demand/detail/the-railway-challenge?utm_medium=email&utm_source=member_engagement&utm_campaign=on_demand&utm_content=august_2015 (http://ondemand.imeche.org/on-demand/detail/the-railway-challenge?utm_medium=email&utm_source=member_engagement&utm_campaign=on_demand&utm_content=august_2015)
Too much talking and not enough video of the teams' results, but an interesting concept. On a personal note, I had fun seeing Richard Folkson (President, I.Mech.E.) as I had last seen him when we were in college together :o.
Makes me want to go back to university and do this instead!