It would be interesting to know if the sequence was:
1) Alcohol-run Model T built.
2) Prohibition.
3) Model T forced to switch to gasoline.
That was the writer’s contention. I’m not familiar enough with early 20th century history to confirm, or refute that.
If that was the sequence, it is interesting.
It was not.
Model T: 'Universal Car' Sparked Gasoline Demand
http://www.npr.org/templates/story/story.php?storyId=92216092
What is the history of gasoline?
http://stason.org/TULARC/vehicles/gasoline-faq/4-3-What-is-the-history-of-gasoline.html
Energy Kid's Page, What is the History of Gasoline?
http://www.eia.doe.gov/kids/energyfacts/sources/non-renewable/gasoline.html#gasoline%20history