In the 1950's, Chrysler experimented with turbine cars. Sam Williams did admirable engineering to adapt aviation turbines for application in cars. Notable was the design of a regenerator that recovered heat from the exhaust and returned it to the incoming air, which significantly improved engine efficiency and kept the exhaust temperature cool. Car mileage was up to 20 miles per gallon which was typical of the piston cars of that era. While reasonably powerful, the acceleration from a stop was a bit sluggish, partially because of the heavy weight of the custom bodies, but from a rolling start was impressive. Interestingly, in cold climates the cars would produce interior heat immediately as it was derived from the exhaust gas. The cost of each car was estimated as $50,000.
After three experimental versions of the turbine, Chrysler built fleet of fifty cars generally known as the Ghia turbines. The cars were designed and built by Italy's Ghia Coachworks. Not being mass produced, the parts were not necessarily interchangeable. The turbines which required a multi-step investment casting process were built by a small company named Howmet. The cars of this fleet were loaned to citizens across the U.S. on a lottery basis. By the end, of the program 203 users had driven over a million miles in the Ghias.
Much of the book is devoted to this user program and the reactions of the drivers and those who came in contact with the cars. While some limitations were observed, the response was overwhelmingly positive.
In the mid 1960's the turbine cars were destroyed with the exception of a few that were sent to museums. In the early 1970's, Chrysler created a sixth generation turbine that demonstrated further improvements.
When the regulation of fuel economy and emission reduction began to drive the development of car engines, Chrysler's poor financial situation did not support further development of the turbine. A major issue was the production of NOx by the turbine.
Letho returns repeatedly to the fact that the turbine could burn any combustible fuel, except leaded gas, diesel and kerosene being the most practical.
Turbines would have been more viable given technological developments since that time, such as improved metals, improved lubricants and NOx reduction with urea treatments.