| Timeline for 5,000,000,029 |
In 5,000,000,029, a new "mood" called Bliss was released. Then a virus mutated in it killing most of the population of New Earth.
The Motorway on New Earth. (TV: Gridlock [+]Russell T Davies, Doctor Who series 3 (BBC One, 2007).)
Because of this, New New York Undercity and the Motorway were quarantined and New Earth was separated from the outside universe to prevent a pandemic. The drivers in these areas remained there for another 24 years. (TV: Gridlock [+]Russell T Davies, Doctor Who series 3 (BBC One, 2007).)