Factual error: The character of Dr. Kearn during his court testimony states that one of his first inventions was the plastic bag for margarine which was used to mix the yellow colouring dye-agent into the white coloured margarine. I have found sources that show that Mr. Peters invented that and held the patent.http://www.michiganhistorymag.com/extra/barnett/butterwars.pdf.
Factual error: The film depicts Kearns successfully demonstrating his invention to Ford engineers using a Lincoln Mark III, a model that debuted in late 1967 as a 1968 model. In reality, he demonstrated the wipers, was hired by Ford and then let go after six years. By 1971, he'd moved to Maryland. Simple math shows he was hired around 1965 - two years before the car he demonstrated with was built. Worse yet, his partner Gil was depicted driving a 1969 Camaro that same day.