Fred, again

Another view of Marriott's car, which was 16 feet long and weighed 1,675 pounds, according to the British Steam Car site: "The engine was a twin piston double acting type with a displacement of 184 cubic inches or 3.1 litres. This corresponds roughly to an internal combustion 4 stroke V8 with a displacement of 735 cubic inches or 12.25 litres."

For more, see "Photos: Firing up the British Steam Car."