The YikeBike mini-farthing is a type of folding electric motorbike released on 2 September 2009 at Eurobike, going into production mid 2010.
It weighs 11.2 kilograms (24.7 lb) and when folded, it is small enough to fit in a carry bag, so it can be transported in an urban bus.
The YikeBike was invented by Grant Ryan and designed by a team in New Zealand over 5 years.
The vehicle has no chain, pedals, gear box, mechanical brake, cables or levers.
A yikebike was found in a storage locker in Season 4's Episode 2 (Series show #74, The Young and the Restless).