Not OP, but I use solar and H8-size AGM batteries as primary with a backup diesel generator that I've converted to run on wood gas (and occasionally coal gas). Added a triple stage water filter to the gasifier last year to keep the tar and creosote down. The generator is an old clunker but it's easy to disassemble, which made it an ideal candidate for tinkering and the eventual retrofit.

Completely rational. It makes sense that an area with a highest concentration of defense/government contractors would see a ton of ads geared towards the procurement folks. I grew up in the beltway and interned with some bigger defense contractors in college, just pointing out that it's a phenomenon unique to the DMV area (with some more memorable examples).

Extremely accurate. L3Harris pumped so much ad money into the walkways at Dulles I'm surprised they don't have naming rights to a terminal. There was a time not too long ago where you couldn't listen to WTOP without hearing Mitre and ManTech ads with the term "Digital Twin".

I install replacements for friends and their referrals who've had them stolen; it's a serious and unfortunately common problem in LA. Roughly 80% are off of Priuses (Prii?) and most local Toyota dealerships are backordered for months. The OEM replacement part itself is one of the most expensive at around $2300 due to the higher level of precious metals in the catalyst matrix. The replacements I install aren't CARB compliant (which is why they're $125 or so on eBay), but it resolves the exhaust leak/fuel smell and noise at the expense of passing emissions.

I'm not sure what aspect of this conversation is "low intelligence", but automotive technician salary data doesn't often match reality where techs can (and often do) make close to double their "official" salary in side jobs. I'm a full-time engineering manager at a startup in LA, and I do repair gigs in my garage during the evenings and on weekends--all word-of-mouth referrals from former and returning customers. I've made a shade over $30k after expenses this year doing 2-3 jobs a week. Most are catalytic converter replacements that I charge a flat $500 for on $145 in parts; takes me an hour per. I've done everything from rear main seals to fuel pump replacements to in-and-out oil/filter changes.

What your comment and sentiment misses, I think, is that a significant percentage of mechanics do shade-tree jobs that won't ever be accounted for in official reports. Dealers and shops have become extremely hit-and-miss, part quality fell dramatically during the pandemic (ask me how I know), and thrifty consumers are more inclined to spend money on independent mechanics that work out of a small shop; there's a ton of money not being accounted for in the process. Maybe not "cool" or "attractive" to you, but I'd love to never have to touch a keyboard again and spend my time working on cars, boats, and fabrication.

This guy was undoubtedly the kid who reminded the teacher to assign homework.