A Guy Called Tyketto wrote:

I was watching the PBS documentary they were showing this week
about AF1, and as they had shown the progression from the planes used
back in Franklin Roosevelt's tenure as President, to the B707 from
Kennedy to Reagan, to the current AF1 (at least that they showed in the
documentary, since Bush Jr. was in it), to be a B742 variant. It got me
wondering...

The B742 is just about all phased out, with the B744 and the
B777 doing the majority of the long haul runs of the Boeing line (yes,
the 767 series is there, but doesn't have the range of the 747 and
777), So, what would do you think the US gov't would do for the B742's
version of AF1's replacement? Does the Gov't have a contract with
Airbus, which could present the A380?

Someone's offering Airbus A340-600 :
http://perso.wanadoo.fr/konnek-t/Info/index.html (towards the middle
of the page)