I have found that even the most prcisely drawn and carefully matched orthographic layouts are riddled with errors when I come to turn them into 3D models. These may not display any great technical precision, but they are nicely rendered and get the idea across wonderfully.
Thats what I like the most, the ideas that are on display here. There are some lovely styling cues and fresh takes on old ideas. For me they're like concept cars, not something you put into production as they're a bit too whacky but something pointing the way and which you nick bits off for your next model.