If you want to drive through the seven wealthiest counties in the United States -- when measured by median household income -- you will only have to visit two of the nation's metropolitan areas.

And it would be best to start your trip from the Ellipse in front of the White House.

From there, drive six blocks down Constitution Avenue to the Roosevelt Bridge and cross over into Virginia. Head down Arlington Boulevard to Route 7 and then take the Dulles Toll Road to the airport.

When you get there, fly to San Francisco, rent a car and drive south to Stanford University. Then drive back north through the city and across the Golden Gate Bridge. Then return immediately to the airport and fly back to Virginia to Reagan National Airport.

When you arrive at Reagan, drive through D.C. and Maryland to the town of North Laurel.

The East Coast side of this trip, according to Google Maps, need never take you more than 30 miles from the White House. Nor need the West Coast side take you more than 30 miles from the San Francisco airport.

But on this excursion, you would not only have driven in the seven wealthiest counties in the country -- but also in the 10th and the 11th wealthiest.

On the way from the White House to Dulles, you would drive in Arlington County,........

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