Our pocket holds two things: our keys and our cellphone, so it's a good thing we don't own a 2007 Nissan Altima or Infinity G35. The intelligent I-Key used to start those models can be turned into a paperweight if placed within an inch of an active cellphone.

The solution: keep the two at least an inch apart.

Nissan isn't rushing a permanent fix since there have been few reported problems. A newer, smarter, phone-proof intelligent key will debut by the fall. Owners with dead I-Keys can get new ones from the dealer. On the bright side, if this happens to you, at least you can call for help. — CAREY GREENBERG-BERGER

Nissan warns U.S. cellphones can disable car keys [Reuters]