Last one - promise.
I found an animation of what the walker would look like at various speeds.
https://www.youtube.com/watch?v=hKhJ5sc2a_U
As you can see 60 KMPH (the stated maximum speed of the "donor vehicle") looks pretty silly. This is less than 40 MPH.
Whether a vehicle that has a top speed of less than 40 MPH is going to be any use in a CW scenario is open to question as it could be so easily avoided, it might as well be a static bunker (and then how it gets to the battle is irrelevant)