I guess interact with the US troops is a bit over reaching but they were designed to boldly drive through the confused lines and seize the bridges on the Meuse, that was why I was thinking that quite possibly one or two of the crew members might be in US uniform.
The Panthers of course were a stop gap measure the unit should have had a full compliment of captured US vehicles but they never got enough.
The wikki article makes interesting reading and makes it pretty clear the idea was to capture bridges by subterfuge. An interesting footnote is the acquittal of the people involved from breaking the rules about wearing enemy uniforms and brings into question the legality of the executions of some of the captured commandos.
http://en.wikipedia.org/wiki/Operation_Greif