In September 2013 Wheels24 reported on four Hollanders who have invented a new gearbox that, they said, would change the automotive industry - one that needs no oil or maintenance and has no cogs.The gearbox was developed and patented as a revolutionary 'Controlled Rotation System' with a simple design, doesn't require lubricant and saves fuel because it lacks friction between the gears. It claims to be a sustainable technology.Wheels24 reader PETER ALLDERMAN writes: The sad thing is that most patents never see the light of day. Also, the widest application of a patent mostly occurs after the protection expires. Inventors are often the biggest hindrance to their idea achieving the biggest audience at the best price, and so maximising the return.A huge profit per unit but multiplied an infinitesimal small number doesn't equal a good return. Often taking a much smaller per unit profit leads to a way bigger ultimate return.It would be interesting to know what happened to UJ's Prof Alberts' super-thin solar panel that was going to solve our electricity problems once upon a time.