I believe it was the name used for the old 2-pump gas station, the one that you spawn next to in Dry Rock Island.
My theory is that node-Beam Is an oil company that collects oil. And that Company owns Nodeline and ships its oil to those gas stations, while Node-Beam Collects the crude oil and turns it into Diesel, and Gasoline.
@Ulrichou86 CAR NAME EASTER EGG: The Hirochi Sunburst name is a reference to the design/figure used in architectural ornaments and design patterns, which could explain why there is a sunburst on the roof of the Sunburst Custom.
Considering @NismoR35 can speak Japanese, he can probably decipher what the writing on the roof of the Sunburst Custom is.
Sorry, I would update the thread in the next day I was kind of lazy. The stuff here is really interesting.