Thanks for the update!
It is difficult to tell from Youtube quality, but it looks like models are going from one level of detail to another. For example, the rear wheels of the last truck/gun snap into focus as it gets closer to the left side of the screen as the next lod shows. It is done as a very smooth transition though
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I also like that there is no 'blockiness' to the poly-model at a distance, even wheel arches at a distance keep their curved appearance. Furthermore the skins are simplified, but all main details seem to be retained (like the writing on the lorries). Reflected/highlight areas still make the vehicles stand out at low resolution.