Elon Musk launches high-speed underground tunnel December 19, 2018 at 05:16AMhttps://https://ift.tt/2S8rsvh The prototype underground tunnel is designed to transport cars at speeds of up to 150mph.

The prototype underground tunnel is designed to transport cars at speeds of up to 150mph.

from BBC News - World https://ift.tt/2rJ7ZFY