Conforming HondaJet Achieves Maximum Speed
 

Honda Aircraft Company, Inc., today announced that the first FAA-conforming HondaJet light business jet has achieved a maximum speed of 425 KTAS (489 mph) at 30,000 ft. and a maximum Mach number of 0.72 above 30,000 ft. This achievement surpasses the company’s performance commitment of 420 KTAS for the production HondaJet.
The FAA-conforming HondaJet’s maximum speed of 425 KTAS was recorded on March 11, 2011.

“We are extremely pleased with the strong performance of the FAA-conforming HondaJet early in the flight test program,” said Michimasa Fujino, Honda Aircraft Company President & CEO. “Our flight tests indicate the aircraft is handling and performing as expected, with excellent control harmony and stability. The HondaJet’s unique over-the-wing engine-mount configuration and natural laminar-flow leading edge and fuselage nose designs significantly reduce drag and greatly contribute to such outstanding performance. In addition, the HondaJet’s HF120 engines are exhibiting carefree handling of thrust and are supporting top-level performance and efficiency.”
More about HondaJet: Conforming HondaJet Achieves Maximum Speed - Pilot Magazin

interesting, first I've heard of it to be honest!

Although those over-wing engines may statistically be better I dont think they are very good looking, especially for passengers looking from inside - it obstructs view.