It's Zane versus Gareth on The Travelator. Gareth has 5 minutes to spell a word, but after every 30 seconds the travelator will move under a gunge tank. There a 6 gunge tanks in total. If he gets it correct, Zane will take his place and finish the journey...
Colin has 5 minutes to answer a maths question but he is, as ever, against the clock as the Travelator kicks into action. 6 Gunge Tanks are waiting overhead, The Messyworld Travelator moves left to right under each tank every 30 seconds, then back again...