Sell the Civic get a Toyota Previa - my buddy whose been living in his car for years owns 3! Some people enjoy living in their car, especially if your work requires travel or you like being able to move someplace new easily or just don't want to stress over things like paying rent. That's great Palo Alto wont give you a ticket. I think Walmart parking lots are all safe as well. I always thought an app telling you safe places to sleep in your car or camp for free or even good dumpsters to dive would be a handy thing to have - get in touch if you want to work on it, I doubt its the right audience to get rich off of though :-)
How exactly is this brilliant? There are way more distractions living in a car, like basic needs, keeping warm, going to the bathroom, changing clothes, internet, charging the laptop, being moved on by the police etc etc. a nice quiet office in some cheap shares space is a much better environment for building software.