Unpopular Edsel
In 1958, Ford spent $250 million on the Edsel, a new car line that they believed was going to revolutionize family cars. But the Edsel was bulky and a total gas guzzler. Also, Ford learned that the team that had conducted the customer surveys that inspired them to build this car had fudged their data. And it became very clear that middle-class customers had no interest in the Edsel whatsoever. But Ford had also spent millions in making this car model they ended up living to regret.