The Line is part of Neom, the kingdom's ambitious megacity project. Linear living is an "ambitious but hardly revolutionary" concept, one expert says.

Nasr, the long-time chief executive of the $500 billion NEOM mega-project at the heart of Saudi Arabia's drive to diversify away from oil, has departed, NEOM said on Tuesday without giving a reason. Crown Prince Mohammed bin Salman,

Saudi Arabia replaced the executive that was overseeing its plan to build the $1.5 trillion futuristic development known as Neom, in the latest sign that the project is struggling to deliver on its ambitions.

Neom, Saudi Arabia's ambitious megacity project, is a key part of the kingdom's Vision 2030 scheme. Its CEO stepped down after six years in the role.

Neom is set to host hyper-futuristic cityscapes and structures — but financial pressures on the kingdom are changing.

Saudi Arabia announced Tuesday that it was replacing the chief executive of its futuristic mega-city NEOM as scepticism mounts over the Gulf kingdom's most ambitious development projects. There has been mounting scepticism over signature projects such as NEOM,