Toyota holds a news conference Monday in San Diego to release its early findings on an alleged case of sudden acceleration by a Prius.

Both Toyota and technicians with the National Highway Traffic Safety Administration say they were unable to duplicate the incident. That's raised questions in some minds about the sequence of events.

But a lawyer for James Sikes, the owner of the Prius, says it's not surprising officials couldn't replicate the sudden acceleration, because they've never been able to. He notes that Sikes never had a problem before in the three years he owned the vehicle.

The California Highway Patrol says it's found no sign of a hoax, and Sikes' wife says they have no plans to sue Toyota. Sikes has turned down numerous requests for interviews.