I have heard of the Chrysler TV-8 design, an amphibious armored vehicle powered by an onboard nuclear reactor...basically a nuclear-powered tank. The TV-8 never made it off the drawing board; the Corporation axed the project in 1956.
Surely there must be other ideas for nuclear-powered land vehicles out there. How about a nuclear-powered tree-clearing vehicle? If applied tactically, this could clear paths through forested terrain and increase mobility options for armored units.
What else could I do with nuclear-powered armored vehicle tech?