Buy an old Dodge W250 with a 12-valve Cummins 6BT, and enjoy mechanical fuel injection and 160 hp. No emissions control, no timing chain or belt, no overhead cams, no aluminum block or heads, ABS is optional, no airbags.
GMO implies a lab process with specific alteration of genes, while traditional plant breeding to traits only exposes phenotypes as indication of results, and relies on the pre-existing variance in species to provide new traits.
The new Flight Simulator is an upgraded version of the engine that dates back to at least 1990s, if not earlier, and traces of the fact are obvious. Legacy aerodynamics simulation from Flight Simulator X (2006) is included and fully functional. Air traffic control system introduced in Flight Simulator 2002 is also there with minor changes throughout the years. Even some artwork is 20+ years old, such as "737-400_scenery_t1.bmp" texture map[1] for a fictional 737-400 that came with Flight Simulator 2000[2]. I guess they forgot to remove it, or left it for backwards compatibility reasons.
For those asking, it's in section seven, additional clauses:
Notwithstanding any other provision of this License, for material
you add to a covered work, you may (if authorized by the copyright
holders of that material) supplement the terms of this License with
terms:
[...]
c) Prohibiting misrepresentation of the origin of that material,
or requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or...
The closest that's actively used is Wabtec's FLXdrive, which is a battery-powered locomotive run between two conventional diesel-electrics. Not a bad idea, since braking with the electric motors otherwise dumps the energy as waste heat. There's also the Railpower Green Goat, which is diesel-electric with a storage battery.