It's a shame when good threads get bogged down in arguments (not the constructive type). This is a very interesting brainstorming otherwise. That's how a lot of great ideas happen. Ideas bounce around and get refined as they bounce.
Just a couple of my opinions (again).
Re: the cornering lights. In talking about lights that permanently face the side, I mentioned in my previous post that several cars use these, but they're on with the turn signals, which we've decided isn't much help. I've been thinking about my off-the-top idea of the mercury switches. They're those glass cylinders with mercury in them. As soon as you tip them over, they make contact and flip a switch. They'd be very low-tech but quite effective if you wanted to mount a driving light facing off to each side. Rather than having to manually turn them on, just 'arm' them, then let the mercury switches turn them off and on. As soon as you get a preset amount of lateral G's, (depending on the angle you mount the switches) the relevant light turns on. Perhaps you'd need a capacitor or some other electronics to keep them on for an extra second or two. Also, if you angle the switches back a bit, they'd react more at higher forward G's too. So, a slightly less sharp corner, but at higher rate of acceleration, will trigger them too. That would be a perfect solution, the lights are only on as long as you need them to be, and they react to every corner that requires them.
Regarding the remote trigger, I've got a pager alarm with remote start. I find the remote start most useful because I'm currently running a first-gen Sony Xplod MP3 deck, which takes about 15-20 seconds to start playing every time I start up. So, I hit the remote start as I'm heading towards the car, and by the time I open the door and sit down, the music has started. Also, It's got trunk release, as well as a couple of auxiliary outputs. When I get my actual carputer done, I'll be able to remote turn on and off the computer independant of the car, as the remote has a latching output.
Since I'm so used to having complete control via remote, the idea of walking near the car to make it start or unlock the door bothers me. Besides, sometimes at my work, I walk right past my car, so I wouldn't want it to do anything. I prefer a remote keypad myself. I suppose the passive system may work well for some, I'm just a bit of a control freak. I don't enable passive arming of my alarm either.
All in all, like I said, this has been a very informative session, with a lot of constructive criticism.