I don't know what type of plane was involved in this incident, but a 2006 Lancair Propjet is a 4 seat experimental, home-built with a service ceiling of 30,000 ft. and a cruise speed of over 350mph. This plane has a 840hp GARRETT TPE-331-2-201A SUPER Turboprop power-plant. This used example is currently listed on Trade-a-Plane for $500,000. The government and lawyers have created so many obstacles to bringing new aircraft to market that the most advanced general aviation planes on the market tend to be “experimental” homebuilts.