Thanks for posting that, Scot!
One of the links is bad: clicking for Figure 3 just gets you figure 1 again-- change f1 to f3 near the end of the URL for the real figure 3. (Then again, since the real figure 3 is a picture of an ugly locomotive built by an also-ran builder (Grin!), GE fans may not want to bother.)
The idea of regenerative braking for diesels (using new technology batteries), mentioned by (GE control engineer) Daum is intriguing: I wonder how far away from realization it is.