The car was designed by Eyston and E A D Eldridge,[2] then built by the father of Tom Delaney[3] It was powered by an unsupercharged version of the V-12 Rolls-Royce Kestrel aero engine.

[4] The car was too large and heavy for circuit racing and was already underpowered by the standards of the absolute speed record breakers.

In September 1935, shortly after Campbell's 300 mph record with Blue Bird, Eyston broke Jenkins' 24-hour record and raised it to 140.52 mph (226.15 km/h) [7] For the 1936 season, Jenkins created the Mormon Meteor by fitting a Curtiss Conqueror V12 into his previous Duesenberg chassis.

Eyston returned, with E A D Eldridge as team manager,[2] and his colleague from Brooklands, John Cobb in the Napier-Railton as another competitor.

The Mormon Meteor made its first attempt, beating the average speed to 12 hours at 152.84 mph (245.97 km/h), but retiring with a driveshaft failure.