Hi sueds, Thanks for the suggestions, btw the tornado in the video is awesome! That's what I really wanna do... But yeah I thing i should hide the building that will be destructed under a dust and make some little models fly around, then fall, then when the tornado moves, the building is different, kind of destroyed... Anyway.

I will need a lot of help to work on a realistic Tornado. I will start a topic on that soon.

For a car model, it would be so nice to get a new one from you.. Here's some good looking storm chasing cars:

http://www.philhenry.com/storm.htm