Superdynamics
The refinement of Elerium powered anti-grav propulsion units has created a new industry for ecologically friendly power sources. Superdynamics has developed sophisticated plants for producing power units of all sizes as well as a variety of airborne anti-grav vehicles. The cost of manufacture is high and Elerium is also in short supply. This means that privately owned vehicles are rare, but Superdynamics developed and installed the anti-grav system for the People Tubes. These safe and efficient tube ways rapidly became the mass transit system for Mega Primus in direct competition to the road network.
benifits
all of the engines and the lighter human aircraft, as well as fuel come from these guys. You will be unable to procure any of these if Superdynamics becomes hostile.