.

[Linked Image from 3.bp.blogspot.com]

One of the rarest Neal Adams stories for DC, and among the last I was able to find a copy of sometime in the late 1980's, is
HOT WHEELS 6, Jan-Feb 1971.
https://viewcomiconline.com/hot-wheels-issue-6/

This came out the same month as DETECTIVE COMICS 407, and BRAVE AND THE BOLD 93, at a time Adams was at the peak of his talent and popularity.
I've often wondered what possessed Adams to do this obscure series for an issue. Maybe he was asked by an editor to do a fill-in story, maybe he just liked the series, or saw potential or licensing possibilities, who knows. But regardless, when I tracked it down, it was actually a nice issue, that Adams clearly put some time into, not a rush job. As I recall, most of the issues were normally done by Alex Toth or Ric Estrada. Another artist Jack Keller did a few pages, and also did a lot of other hot rod car comics and westerns for Charleton and Marvel in the 1950's to 1970's.