It's a bird! It's a plane!

[unixronin]

Nope.  It's Frankenbooster, a proposal to get a family of heavy-lift boosters operational fast by reusing Space Shuttle parts.  The low-end configuration mates three SSMEs to a Shuttle external tank, straps two Shuttle solid boosters on each side, and puts a payload capsule atop the tank to lift 70 tons to orbit.  Other proposed configurations lift 100 or 130 tons.