Gilbert Loomis built a pioneer steam car in 1896, but did not put it into production.[1]

Subsequently, Loomis built gasoline powered cars. His first cars built for sale used 5 hp Crest air-cooled engines. About 50 of these cars were made from 1901 onwards.

Loomis Automobile Company Magazine advertisemnt,1901, unknown magazine,

This Loomis Automobile Company advertisement appeared in an unidentified magazine in 1901. It appears to be a steam carriage, but may be powered by an internal combustion engine.

[1]Georgano, G. N., Encyclopedia of American Automobile, (New York, E. P. Dutton & Co., 1968), p. 120.