Here's one I hadn't heard of. https://www.yahoo.com/news/weird-arm...122600401.html

I recall that thing, it fell into the category of "just because you can build something doesn't mean you should"

It really seemed like the worst of all worlds.

Originally Posted by George

Here's one I hadn't heard of. https://www.yahoo.com/news/weird-arm...122600401.html

The logic behind it made sense but the translation into a physical design didn't.
The original idea was essentially a small support tank but they had issues fitting a decent gun into a small turret so for some reason they bolted bunch of recoilless rifles to the turret and called it a day.

Personally I think what they should have done was reinvent the Stug III or IV using the M-60 Patton chassis.