I was thinking of cars that existed when I was a youth that no longer exist. The AMC pacer came to mind. Of course the entire company is long gone. List of defunct automobile manufacturers of the United States - Wikipedia Possibly the most famous around the world is the DeLorean due to the back to the future movies. DeLorean Motor Company - Wikipedia For a massive failure the Edsel Edsel - Wikipedia Electric and Steam had major roles in the past, not so much today. Perhaps Electric will be the wave of the future, but not until a better storage method exists. Participate as you desire, or not.