something like that, the strength could be high enough that it could cause a ig seg nal. reporter: and you think that powerlines could be one of the culprits here as much as cell phone and blackberrys. yes, depending on the strength. reporter: again, this is not unique to the toyota or camry, because many makes and models are laid out like this the wirs unshielded and another expert say that may be an issue, the fact that the wires are not shielded could make them more susceptible to the interference and if they were shielded, could that cut down on it? absolutely. it is a very big concern especially in the safety-critical devices that the wires are shielded so they won t be susceptible to electromagnetic interference. now, we have to reiterate that electromagnetic interference is one possibility that the federal government is looking at as a possible cause of why the throttles open up. the feds are clear to say they have no hard evidence that it