[Griefbringer]

I have tried to use Goliaths in game a few times, out of curiosity. In practice, they are of very limited use: slow speed, vulnerable to anything beyond small arms, and limited effect of their demo charge. Against infantry you will need to get them close enough to risk close assault (maybe a brave infantryman rushes out and cuts the cables), while against bunkers their limited penetration might be a problem.

In game, thry are probably best reserved for specifically designed city-fighting scenarios ala Stalingrad.

In real world terms, I think the basic concept is actually quite good and pretty innovative for the time. Their practical performance (with restrictions of WWII era technology) might be another issue.