What are the weaknesses of steam power?
Disadvantages: Steam engines are usually huge and heavy. Because of this, it is tough to transport them from one place to another. Steam engines have a lower efficiency as compared to other heat engines. Advances in the design of electric motors and internal combustion engines resulted in the gradual replacement of steam engines in commercial usage.
Why is steam power no longer used?
In the 20th century, the rapid development of internal combustion engine technology led to the demise of the steam engine as a source of propulsion of vehicles on a commercial basis, with relatively few remaining in use beyond the Second World War. The earliest steam-powered car we know about was finished as early as 1769 by French inventor Nicolas Cugnot. It was a large three-wheeled vehicle that moved at the speed of a walk and was meant to haul cannon. Earlier cars had been driven by springs and compressed air.