Quibbles... minor factual errors you notice that distract from the story

[mvccd1000]

Thought it would be fun to read a thread of little errors people notice that undermine the premise of the fiction they read. For me, these often involve machines or mechanical devices, as I'm a mechanic. Others might be historical in nature, or political, or what have you. I'll list two from a recent book I read:

1) The protagonists end up in a large city that has not been inhabited in approximately 60 years. Most of the buildings have crumbled to the point that walls are gone and may of the concrete floors in skyscrapers have fallen through, while trees grow in the streets, etc. My quibble with that is that it doesn't seem to stand up to much scrutiny. I recently saw this tour in the Detroit News of abandoned skyscrapers in Detroit; many of them have been abandoned since the early 70s (going on 40 years), and are in nowhere near as poor condition as the author supposed buildings would be in a snowy climate. http://multimedia.detnews.com/pix/photogalleries/newsgallery/detroit_emptybuildings110711/index.html

2) They later find themselves in a desert area with some cars that had not been driven in the same amount of time. Supposedly all of the tires had rotted away to the point that the bare rims were resting on the desert floor with nothing but rubber crumbs around them (and the rubber figured prominently in the story). As an old car hobbyist who enjoys trolling out-of-the-way junkyards on weekends, I've come across many cars that have been sitting in the same spot for 40-50 years in similar climates... all of them were still sitting on their own tires (flat, but complete).

Fabulous stories, but the incorrect (or unlikely) facts keep popping up in my mind as I continue to read.

What have you noticed in your fiction lately?