To answer what is the difference between Tesla and Cyclone, $5,000,000,000.
Derivatives are not the real money spent. Cyclone development has spent $8,000,000 on R&D.
Engines can be called motors but it is unusual for a motor to be called an engine. Sometimes, terminology can cause some confusion. For instance, bushings and bearings are called bearings, but I never heard of a ball bearing called a bushing. From my research, the Cyclone bearings are hybrid ball bearings. They are non corrosive with ceramic balls designed to run in water. Your car engine has bushings and must run on an oil film. Balls do not have to have this. In ball bearing engineering, the grease filled bearings, have a lower RPM rating than lighter oil. Of course, a normal bearing would rust without some kind of oil.
Does anyone out there have an engineering background, not just here to bad mouth what they don't understand?