[calum]

I read about this but there are a lot of problems.

To use this properly you would get nowhere near that speed. They were communicating between 2 routers 2000km apart.

When you use the internet you go through loads of routers and if your internet was 40Gb then all the routers and connections would have to be at 40Gb and even if one router was slower then the max speed would be the speed of the slowest router/connection.