Flight Path for getting to Windhoek

This is the route we're taking to Windhoek.   We are leaving from Seattle Friday afternoon on a 5,095 mile, ten hour flight to Frankfurt, Germany. 
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       ?? Question for the iPod Touch users --
       Is this flight longer or shorter than driving
       from Minter Creek across the country to
       New York City and back to Minter??
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We'll still be in the northern hemisphere  when we land in Germany so we're expecting cold weather.    We'll have a ten hour stay in Frankfurt.  We will cross nine time zones during our flight.  When we arrive in Frankfurt at 7:00 a.m. Saturday morning, our bodies will feel like it's still Gig Harbor time which would be only 10:00 p.m. Friday night !   To make the adjustment, we'll force ourselves to stay up by taking a train into Wiesbaden or Mainz.