When Musk first announced his plans to bore a tunnel to his SpaceX offices in Los Angeles, it was hard to know if he was simply venting his frustrations about being stuck in traffic.
But he ended his rant on Twitter with: 'I am actually going to do this'.
The entrepreneur has a strong track record of getting ideas off the ground.
Musk has started two transportation related companies - Tesla for electric cars and SpaceX for launching into space .... http://www.dailymail.co.uk
