A 1969 Cadillac Coupe DeVille is a pretty cool car to begin with but when you turn it into a hot tub Cadillac then you know it’s going to be a unique classic car. That’s exactly what engineers Phil Weicker and Duncan Forster have done and they are going to try and set a world record for the world’s fastest hot tub car. I would imagine this car would be quite the hit at any car show. If you like this and want to see another really cool car checkout this Supercharged 1953 Cadillac Eldorado.