cross pond high tech

Elon Musk has unveiled a prototype underground tunnel in Los Angeles which is designed to transport cars at high speed around the city.

The tunnel is only a mile (1.6km) long at the moment but the goal is a network to ease chronic traffic congestion.

Modified electric cars would be lowered into the tunnel and travel at speeds up to 150mph (240km/h), Mr Musk says.

The tunnel has been built by Mr Musk's Boring Company, which boasts state-of-the-art engineering techniques.

 

Mr Musk, best known as the head of Tesla electric cars and the commercial SpaceX programme, arrived at the launch on Tuesday in a Tesla car modified to work on the "loop" system.

He was cheered by a small crowd as he emerged from the car at one end of the tunnel bathed in green and blue interior lights.

 

The plan envisages modified cars being lowered into the tunnel network by lifts and then slotted into tracks on the "loop".

"The profound breakthrough is very simple: it's the ability to turn a normal car into a passively stable vehicle by adding the deployable tracking wheels, stabilising wheels, so that it can travel at high speed through a small tunnel," Mr Musk said.

 

 

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Alana Semuels, of The Atlantic, told the BBC World Service that Mr Musk had yet to unveil the technology that would allow vehicles to travel at such high speeds through the system.

"At first he said we're going have these tunnels and transport people in pods, now he's saying we're going to transport them in cars, so I'm not sure even he knows how it works," she said.