Phil Weicker and Duncan Forster sit in their hot tub Cadillac filled with water on June 06, 2014 in Los Angeles, California. [Photo: CFP]

The pair from Los Angeles, U.S.A. plan to take their turbo-tub to Bonneville Speedway, Utah, in August to set the land speed record for the worlds fastest hot tub.

The engineers transformed the vehicle, named The Carpool DeVille, based on a prototype created when they were engineering students at McMaster University, Canada.

The team bought the car for $800 and improved its heating, suspension, controls and pool plumbing in a six-year restoration.