If you are short of rain....   I have loads and loads to spare. 
Bimini is an old school term which allegedly originated with the canvas coverings on boats. In this weather your buggy certainly can claim to be a boat   

Anyone got a cheap schwimmwagen that they can sell me. (Must be cheap as I don`t have £180,000 going spare    

Thanks all & thanks Paul for the explanation. 👍 Deb

Bimini tops originated for boats, supposedly first made on Bimini Island/Atoll in the Bahamas.