The artificial gravity generator

   

They make mention of the City of Space in a Jack Williamson novel which is way before my time. Rama by Arthur C. Clarke is more my time. It's a giant interstellar cylinder with cities, farms etc. travelling through the galaxy...

   

Artificial gravity has so many bloody possibilities its not even funny. If they could produce it in a practical manner that would be so damn cool I would giggle like a school girl. Just imagine all the flying cars everywhere Cant wait!