but seriously, the Viper has much bigger hull volume, this alone accounts for a lot of the weight gain and the beams are massive compared to the tiny Taipan things.
All these things make the Viper faster than the Taipan, so in reality there is progress... More in the shape and stiffness areas rather than the construction methods.
Cost has been contained rather well, if you made a cat with the same tech and weight per Square M as a Moth then it would cost more than a Porsche...
