We’ve been hearing quite a bit about wireless 5G technology over the past year, but most of those tests have been with stationary in controlled lab environments. However, Samsung and Japanese telecom giant KDDI have demonstrated a working 5G link from a moving platform — in this case, a passenger train.
Samsung and KDDI carried out the tests

Source: Hot Hardware – Samsung And KDDI Demo 1.7Gbps 5G Gigabit Wireless Link From A Moving Train