Can we draw the following hypothesis from the context?

Context:

The Sydney/Melbourne Express was an overnight intercapital passenger train service that operated between the Australia's largest two cities, Sydney and Melbourne, between August 1986 and November 1993. Operated jointly by State Rail Authority and V/Line the name depended on the direction of travel, with the train nicknamed the 'Sex' or 'Mex'.

Hypothesis: The State Rail Authority closed in November 1993
It's impossible to say