PHILADELPHIA (WPVI) -- Philadelphia police are warning drivers of newer model push-to-start vehicles that thieves are using advanced technology to steal cars without needing the original key.

"I've seen them stealing a car in under two minutes," said Lt Brian Geer, who leads the Philadelphia Police Department's Major Crimes Auto Theft Unit.

Police say the new trend of key fob cloning targets cars with push-to-start. Suspects use a key fob programming device and connect to the car's computer.

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"They'll take a blank key fob and create a new key fob," said Geer.

In what investigators are calling a "relay attack," thieves can target the key fob inside the home.

"They will take an antenna near your

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