It is indeed a Borgward IV.
Actual control during an attack was done from an armored fighting vehicle. The original vehicle used was the Panzer III tank. Then the StuG III/G and finally the Tiger IE. These vehicles had added radio equipment and the controller directed the BIV to its target by radio. When it reached the target, the vehicle would drop the charge and leave the danger area.
The picture you have in the frontal view looks unlike the pictures of the Borgward IV. That is because in your picture, the "load" (explosives in this case) is not in place. It was a boxy compartment in front of the vehicle, to be set down and exploded later when the actual vehicle was at a safe distance (unlike SdKfz 302 Goliath or SdKfz 304 Springer).
Google image search brought me to this page, which has some really nice pictures of the Borgward without it's load and while unloading it. It looks identical.