im gonna go with lunchtime special on this one, it looks like just like that protoform prime we all saw a couple of days ago
It's definitely is a lunchtime special, this is why he keeps calling them "prototypes". It's the 3rd chrome custom to surface in the last 4 months made by Heero. Chrome Henkei Convoy, and protoform being his other two.
Looks similar to the one I posted before: http://www.tfw2005.com/boards/transformers-toy-discussion/223051-clear-big-convoy.html