@CNN: Elon Musk unveils his first underground tunnel designed to beat traffic congestion https://t.co/6MU9zDKiU5 https://t.co/Syfux8e00W

@CNN: Elon Musk unveils his first underground tunnel designed to beat traffic congestion https://t.co/6MU9zDKiU5 https://t.co/Syfux8e00W