The U.S. debt clock has swept past $18 trillion without so much as a flicker of hesitation.
But what is $18 trillion?
How about figuring it in exotic supercars, like those 253-mph, 1,001-horsepower (and 8 miles per gallon) $1.9 million Bugatti Veyrons?
For the national debt, you get just a handful short of 9.5 million of the cars.
How about air-hours for a major jet like Air Force One, assuming operating costs of about $275,000 per hour?
You’d have to rack up 65 million hours of flight, give or take.