Looks like MP-only, but very moddable.. *shrugs* yeah, that kinda kills my joy, too.. I wish they had an SP mode.
However, on the plus side, gliding (called "cutting" engines) works, and you have full thruster control. It feels very similar to FreeSpace, with an Afterburner (called Boost), weapon energy, missiles, etc, etc. Tri-chording also works.

(The speed gauge is inaccurate whilst doing so, but if you release all except your forward thrusters, your speed will suddenly show above max before slowing back down. Haven't tried it in combo with boost and cut engines, but we'll see.)