Prosecutors believe that other phone calls may be on Mr. Pellicano's computer hard drive, but code breakers haven't yet figured out how the detective may have encrypted those calls.

NPR: The Math Behind Pellicano's Code

The best advice is in the Highway Code - drive with care even if roads have been salted, be prepared for road conditions changing over short distances and take care when overtaking gritters.

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"Article 152 of the International Sporting Code states that drive-through penalties are 'not susceptible to appeal', " the FIA said in a statement.

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