That reminds me, getting back to the topic (sort of), when it said “Cool book of old school car renderings” I thought said book might be one of the editions of Tad Burness’ Auto Album. I had a small Scholastic edition but there’s a larger, more complete edition as well. Anyway one of the more unusual cars in there was the NSU Prinz, of which Burness highlighted its having 2 cylinders.
I really wore out my copy, coming up in a fairly automotive family (my grandfather was a mechanic, and my dad & his siblings grew up working at the garage). If it’s genetic then it re-intensified with my son. When he’d regale my father and/or I with some automobilic minutiae (e.g. the mpg on the 2nd generation of Subaru Imprezas vs. the 3rd), we’d respond “oh yeah? Tell me, what’s the spark plug gap on the Hupmobile?” So not long ago, I got him a copy of Auto Album and bookmarked the page with the Hupmobile.