Buying a new digital camera

[sunsetncars]

I want to buy a new and better digital camera to replace my sony cybershot 5 mega pixel. although the picture quality is good it is to slow starting up to catch cars flying by. what are some good choices to think about, but it has to have

1. 4 mega pixels or higher
2. instantanious start up and snap
3. reasonably sized (not the size of a dog)
4. long optical zoom (or have attachable zoom lenses)
5. possibly come with a remote control

price is not really an issue but paying $5,000 is too much for any digital camera