is this itinerary possible/practical??

I don't think it really matters which way you want to start. I'd probably go Paris, Normandy, Belgium and Netherlands. Two weeks should be plenty of time. I prefer France to Belgium and the Netherlands.

I liked the coastal towns in Belgium and the Netherlands has plenty of smaller known towns that aren't too big of a city. Even Amsterdam, to me, doesn't have the same big city feel that Paris or London has.

You can visit viamichelin.com or mappy.com for mapping distances and estimating times. As for car rentals, you might want to start pricing one-way rentals--often there is a huge drop off fee for leaving the car in another country. Try AutoEurope.com to see if this is the case. It might be better to fly to Paris (CDG), rent a car, see Normandy, then return the car to a train station in France where you could catch a train to whereever in Belgium you are going. You can find rail maps online-try raileurope.com-to figure out where you should drop the car off.

Check out Rick's books (or his tips on this site) for opinions on the best places to visit in those countries. I've followed his recommendations and been very happy.

I agree with Christy in that you may want to rent a car in France to see Normandy, but travel by train in Belgium and the Netherlands. Train travel would be much more efficient in these countries and they have pretty reasonable rates on the inter city trains.

Don't miss Brugge, Belgium. It is definitely work a full day.

This past April we completed a similar trip taking 3 weeks. We spent 5 days in Amsterdam, 2 days in Bruges, 7 days in Paris and 4 days in the Loire Valley. The plane ticket then was about the same price either way (Ams/Par or Par/Ams)and only about $50 more than the roundtrip in and out of either Paris or Amsterdam. We got a Benelux-France railpass for 5 days of travel and enjoyed the trains as they are easy and convenient. Bruges was lovely and certainly worth a day or 2 (Hotel Fevery 80 euro for 2, breakfast, basic, and friendly). Our Avis rental car for 4 days in the Loire area ran nearly $500 after all the insurance (our choice but I'd be a nervous wreck without it) and gas was $10 per gallon. I like driving and enjoy flexibility but the trains are winners in my book.

Amsterdam is very charming and walkable; it is not at all in the same "big city" category as Paris or other destinations. I wouldn't dream of a car in either Amsterdam or Paris; it's toally unnecessary in Amsterdam and suicidal in Paris. The ideas posted about drivng from Paris to Normandy and then getting rid of the car sound good to me. PS Do the Loire Valley chateaux appeal? We had a fantastic time, and while we met 1000s of French tourists, we never ran into 1 American! I was starting to wonder if it's off our radar or what. Good luck in your planning. And by the way..be careful...we had such a fantastic time that we weren't home 2 weeks before we bit the bullet and bought the tix for 3 weeks to Italy this September! Caveat traveler! :-)

You are right to avoid the cities. And driving in European cities is futile. Always take your car and drop it in a suburb. Use local transportation (bus or underground) for fastest, cheapest and easiest means of getting there and back.

Driving to Normandy is best; don't rely on bus or train service. Use Michelin map service (listed in another post above) for distances and time.

I would avoid flying into Paris; it takes too long to get out of the metropolitan area to the autobahn.
The Paris metro system is fast and easy to learn.

If you look at a map you can tell how far apart those points are that you mention. I have found that estimating time of travel it is best to use 50 miles an hour for auto as well as RR travel. That way you can convert miles into time required.

I'm not sure what Carl means, but flying into Paris is a good idea, since none of the airports are in the populated areas of Paris. CDG especially is a good idea if you plan to head to Normandy by car....you won't come anywhere close to Paris proper. After Normandy, you could take the smaller highways in through Belgium to stop at locations like Ghent and Brugges. You could then continue along close to the coast, taking in some of the smaller Dutch cities (Delft, Utrecht, etc) before dropping off your vehicle on the outskirts of Amsterdam and taking the local train or bus into the center of the city.

This might be helpful-

An extensive rail map of Europe (PDF)

I second the Bruges recommendation. We only stayed one night and I would have liked a second.

Definitely stay overnight because it looks magical after the sun goes down and all the day trippers leave.