I have worked with C-Dax on a number of sprayers such as the Sprayrider 80 and Spray On 200.
Sprayrider 80
The design brief called for a separate fresh water tank to be fitted as a stand alone component to the spray tank. It needed to be easily removable but also lock into place while in transit and remain firmly attached regardless of the terrain. It also had to look stylish and fit all models of ATV's.
When this tank went into production it was the latest design in ATV tank shape.
There was also another model developed to allow farm dogs to sit on the top.
c-dax.com