Certified to FL410 it will do 300kt on 100gal/hour. the problem wasn't drag but instead being overweight due to the FAA not understanding composites and requiring the fuselage to have twice as much structure as was really needed. the big plus to this design is it is virtually unstallable and therefore unspinable making it a very safe aircraft. this one has been remanufactured as an exp. after beech/raytheon decommed it along with a bunch of the other starships. that is why it is currently listed with a different manufactures name.