Nagoya sightseeing options?

We will have a limited amount of time in Nagoya, but my son is very interested in the Toyota factory. I think this is nearby? Do they offer tours? I read there is a museum near Nagoya station. If there are factory tours, does anyone recommend them or is our time better spent visiting Nagoya Castle, etc.

Here you go:
http://www.japan-guide.com/e/e3308.html

And more about Nagoya:
http://www.japan-guide.com/e/e2155.html

Thanks for directing me to the toyota information. It states we should make reservations for the tour two weeks in advance, but doesn't mention where we call. We'd like to take the tour a day after our arrival in Japn, so I would want to take care of this before leaving Hawaii.

The phone number for the Toyota museum (near the station) is 052-551-6115, and for the Toyota factory visitor centre is 0565-88-8811.

You probably already know about the various lovely shrines and parks. I'd also recommend a couple of hours in Osu, which is sometimes called 'the Akihabara of Nagoya' - well, I wouldn't necessarily call it that myself, but it is a really fun shopping district with all kinds of little stores all based round Osu Kannon Temple (which is worth a look on its own)

If you read the whole page, you will find a link with details on how to apply for a plant tour. Here is the link:
http://www.toyota.co.jp/en/about_toyota/facility/toyota_kaikan/plant_tour/index.html

actually a question... how can i get to toyota exhibition hall fron the centrair airport by only taking their airportbus?? is it direct? please help