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This is Scientific American 60-Second Science. I'm Wayt Gibbs. Got a minute?

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(sound)

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Probably every race car driver today played with Hot Wheels cars as a kid,

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and imagined what it would be like to go so fast that you could drive around the wall of a race track without rolling over.

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Turns out that's not as impossible as it sounds.

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Some physics students at the University of Leicester in the U.K.worked out the math.

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Four factors are crucial in keeping a car up on a vertical curve: friction between the tires and the track; the weight of the vehicle; its speed;

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and how hard the car presses into the road, which depends on its aerodynamics.

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The work appears in the Journal of Physics Special Topics.

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An Indy race car hugs the road at high speeds.

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And on a circular track as long as the one in Indianapolis,

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it would have more than enough sticking power to cling to a vertical wall at 150 miles an hour.

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But do not try this yourself.

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Most consumer sports cars don't press down when they go really fast, they lift up…up and away.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Wayt Gibbs.

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