Some automobile manufacturers have recently developed a leaf spring that is constructed of a composite material similar to plastic in order to provide a softer type of rear suspension.
Flight time from New York to Reykjavik is 5 hours 30 minutes. Non-Stop flight duration from JFK to KEF is 5 hours 30 minutes (Operated by JetBlue Airways).
Supersonic jets can fly from New York to L.A. in 2.5 hours (or less) by Steve Hargreaves @hargreavesCNN November 26, 2014: 11:22 AM ET An illustration of Lockheed's N+2 concept aircraft, one of many that may return supersonic service to passenger air travel.