There isn’t one, the only stealth fighters are in the US or Russia/China. If you don’t have stealth fighters at all you will lose very badly in an air war against someone that does. That’s just how it is, you have an overwhelming advantage if you can shoot your enemy but they can’t even see you at range.
Efficiency drops significantly as you go faster than 50mph, so they would be more practical for city cars that don’t do a lot of time on the highway.
Why? Because basic engineering will tell you that small areas of low quality waste heat isn’t something you turn into usable energy.
In the horizontal gene transfer you have one that’s f+ and the other f- and this article talking about E Coli specifically is pretty gendered.
" This chapter deals with F-pilus—sex hair, sex pilus, F-fimbria, and sex firnbria— of Escherichia coli. It essentially describes methods of assay and synthesis of F-pili, their functions and properties, and the mutant approach to the F-pilus problem. F-pili first observed, differed from common pili by the random adsorption of small RNA viruses along their sides. F-pili are both longer and wider than Type I or common pili. Frequent appearance of knobs or enlargements at their distal extremities is also used to distinguish F-pili in micrographs. Free F-pili from the supernatant of a culture of male cells can be treated with ultrasonic vibrations to yield smaller fragments"
https://www.sciencedirect.com/science/chapter/bookseries/pii/S0065291108603641
It’s on a long term cycle 50kyears ish where it goes from green to dry.
https://en.wikipedia.org/wiki/Hadley_cell