10 Great Car Improvement Ideas Which Never Came True

Photo by 54 Ford Customline

5. Submarine Cars

Small submarines have been engineered for use in warfare dating back to many failed attempts before the technology matured enough for widespread use in the 20^th century. As automobiles started to become more prevalent in the 1920s and going forward, it seemed to only be a matter of time before submarine cars would be widely adopted throughout the world. Similar to the flying car, the possibilities of being able to take one’s car from the highway to destinations on land across water seem endless. This car improvement idea has never come true; however, as submarines today remain in the domain of militaries and drug smugglers. The high research and development cost to create a combined submarine car just seems like it will be a long while (if ever) before we see this innovation hit the mainstream for car and truck drivers.