"It is within your capabilities to do something like this yourselves - assemble a team you can work with and hope you don't kill each other in the process," he told the City College students.
Mr Ward, the lightest member of the team, demonstrated riding the bike but Mr Furket said it was strong enough to take the weight of each individual team member.
"We experimented with the corrugations in the cardboard and found they were stronger at certain angles" said Ward.
Mr Zettler said it was the first time he had set the challenge and the four students had excelled at the task.
"They weren't given a budget. They had to fund it from their own pockets and they went all out to fill the brief.
"Previously students have made little cars propelled by rubberbands and I wanted to give these students something large scale that would test their design abilities."
Wanganui City College head of technology Chris Donaldson said when he heard about the bike he asked if it could be brought to Wanganui for a visit.
"We had changed the focus for our Year 12 and 13 Design Technology classes from a challenge to innovation and this bike is a great piece of innovation.
"A number of our students build mini-moto bikes each year and there was a lot of interest in the cardboard bike."
