1. N/A
2. Many aftermarket companies interact a lot on various forums, but not many large manufacturers, be it cars, bikes, boats, whatever. I think the main reason is that it is difficult (impossible really) for any individual to accurately express the views/plans of a large corporation. As far as technical correspondance, the only people that *should* know the thing mechanically in and out are experienced dealer techs/service/parts personel, service reps, and the designers themselves. No one knows everything, but what distinguishes the good from the bad is their ability to figure it out.
3. There are at least a few members (myself included) that work for Toyota dealers and at plants, not sure if anyone works at corp. I answer what I can, but assure you many members that have done extensive research, that don't work for Toyota, know more than I on certain aspects. Many people from corp. would be in the same boat.
In addition, there is the issue of bringing work home.....I come on here for entertainment, learning and helping people out where possible; not for business. I don't particularily want a bombardment of part number/price requests, or "you should know....you work for Toyota" type questions, as this is something I do for fun on personal time.
4. Not sure, but it could be great market research if they did. Also would help to find common problems. I wouldn't doubt if they get some ideas through the internet.....they're not stupid by any stretch. That said, the internet is so full of BS that it's tough to sift through sometimes.
5. Of course they wouldn't be barred from interacting on a personal level, however, the problem would be what I mentioned earlier.....an individual representing (or misrepresenting) the entire company. Who would they nominate to post "The Toyota Answer?" That said, the Toyota answers to most questions lie in owners manuals, shop manuals and resources of that nature.
As for questions like those posted by 05SportV8.....I often wonder about those things myself, and am no closer to the answer than anyone else on here. I would love to go over a vehicle with the people that designed it and ask "why is this like this.....why is that like that?" type stuff, but it's a little tough
