Saudi Arabia has been left humiliated after being forced to scale back its multi-trillion-dollar plans for a 106-mile linear megacity in the desert to just over one per cent of its original length. The ambitious project, named the Line, forms part of the kingdom’s lucrative Neom infrastructure project – which had been slated to cost up to $1.5trillion. But issues with contractors have stunted the growth of the Line; one firm has already laid off workers as goals have shifted to sorting out the construction of three short segments of the project – amounting to 1.5 miles in total – by 2030. Whil…