Specifically, I'm asking about the cover to 1941's Human Torch Comics #5:
1. Where did Namor even get that thing he's driving around (and by extension, where can I get one)?
2. Why doesn't he ride that thing all the time?
Admittedly, flying with the power of little wings on your ankles probably allows you to cover more ground than what appears to be a giant electromagnet mounted on tank treads, but in case you missed it, it shoots lightning from a pair of antennae, and thus makes a lot more sense than, say, the Justice Jogger.
Like Mark Hale said when I showed him the picture, that thing's like six GI Joe vehicles dropped on top of each other--and it's even monogrammed. If that wouldn't have spiced up some Defenders issues, I don't know what would.
The 1999 reprint of this issue, Timely Comics Presents the Human Torch, not only features the above cover painted by Ray Lago, but also features this on the back cover:
I don't know if that's the recreation of an actual ad, or just something they cooked up for the reprint, but what I do know is that it's comedy gold.