I didn't want to speculate when I posted the pictures, but roj2323's insight seems appropriate. Viewing the area in person, there doesn't seem to be enough room for any food trucks at all. My prediction: the "food truck" idea has been replaced with a different use for the area. I can imagine (but not confirm) food kiosks, landscape planters, fountains, a small entertainment stage, and general seating. The area closer to the lake slopes lower to the level of the sidewalk near the lake, which provides even less room for the "food truck" plan. By the way, the posters on the outside walls still say "food truck park coming in summer 2014."