Christie Tanks

[Jacek]

I have an idiotic question for the connoisseurs of tank hardware. It comes form my laziness, although I really tried to find something useful, really.

So: Was there anything more about the "Christie" concept than just the ability to drive fast and with/out tracks?

Another, a little a propos question: Under what designation did Christie sold his two tanks to USSR? Suvorov aka. Rezun says: as agricultural tractors, without turrets (and despite reservations of DoD). Is that correct?

Thanks in advance.