cheers arran, the quality of the vid is a little poor but you get the idea 
thanks some guy
yeah I wasnt sure how hard to make the walk up the plank. I figured that it wasn't too bad when walking but when running it can be very hard.
The motorway bit has been done so that the number of traffic lanes and speeds of the vehicles can be altered - the plan was to have a futuristic level with 20+ lanes with little breathers/rest points between groups of lanes. Maybe that'll come if I go back to it 
Si