Background behind new technologies

I was wondering about the background (plausible explanation) for the new transportation technologies in ED. Like cruise mode and nearly instant jump drives. Logically I assume the two are connected. Basically once humans got cruise technology it only made sense to cruise through the hyperspace tunnel, causing near instant jumps from system to system.

The big question is how did humans get cruise technology? Did they develop it? To me it seems more logical they got it from the Thargoids some how after the new peace. Although it's obvious the Thargoids didn't have cruise technology before since we didn't see them using it. However maybe it makes sense that once the Thargoids and humans were at peace that their scientists started working together and a combination and human and Thargoid technologies enabled the breakthrough.
 
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