They experiment with two ways that vehicles may be driven - energy directly applied to the axle with a wind-up rubber band, and energy that is separate from the axle using balloon-powered propulsion.

You're sitting in a car that's not moving. Also in the car is a helium-filled balloon, which is resting up against the car's ceiling somewhere near its middle. The driver hits the gas and the car ...

Sthembiso Bokleni turned to the Eastern Cape High Court sitting in Grahamstown after Westbank obtained default judgment against him for not paying the outstanding balloon payment on his car.

He claimed that he never received a summons or any notification in terms of the National Credit Act and as a result, he was unaware of the outstanding debt.