Kaylee about to emulate a Wood Duckling :)

[frater secessus]

Greetings!
I'm a middle-aged (50s) female Geek, and 13+ years TBI (Traumatic Brain Injury) survivor.

The main lingering TBI issues are noise and smoke/perfume/etc sensitivies.

Sorry to hear of the TBI. 
One of the reasons I prefer solitude is the quiet.  Dunno why noise bothers me so much but I've always been that way;  my parents always described me as a "sensitive child", which I suspect meant "nervous wreck".  :-o  I keep a pair of foam earplugs in my pocket.

I've been a Nomad for more than two decades, doing IT contract work, typically moving twice each year.

I'd sure like to read more about how your approach (or the world) has changed over those decades.

Since the Recession, it's been stunningly difficult to find even barely adequate (i.e. quiet & smoke/etc-free) short-term rental housing. I've had some truly evil landlords, and spent far too much time in bad motels... 
I stumbled upon stuff about sleeping in one's car, which led to CRVL & other great sites, and boondocking.

I suspect this will be a Great Leap Forward for you.  Sometimes onlookers folks see the small space and think "I could never do that."  I see these small spaces as refuges where we can stay out of reach of evil landlords, hoteliers, and obnoxious neighbors.  
My previous Nomad experiences have given me many of the basic skills that I'll need.

While I feel I have "no choice" in moving to this lifestyle, I'm also in happy awe of how perfect it fits my needs, and am looking forward to doing a Noise Detox.

Absolutely!

Has everyone seen videos of Wood Duck ducklings leaving their birth nests for the first time?
...
Yes, I'm a lifelong Birder, and really looking forward to living full-time in the wonders of Nature.

Yes, those ducklings are amazing.  It's just unreal watching them leap off like that. 

I have latent birdwatching tendencies, I think.   I like birds that most folks ignore or actively hate:  sparrows, grackles, etc.  My deepest bird love is reserved for elegant waterbirds like cranes and herons.  I have to be sure not to get fixated when crossing bridges...

I live in an area with a lot of bald eagles.  I saw one (and also a golden) in my back field this year.  But I like cranes better.  :-)  Grass is always greener, I guess.