Hi Kin
200 miles is not bad but if you are a little more aggressive how much does that effect the range?
If you max out on the autobahn, I guess you'll be lucky if you get 100miles out of it, but so will your V8 machine, the difference would be its free for me to top up while it cost you at least £100 a pop to fuel up!
This thread should answer your question.

Bear in mind that there will be more superchargers on its way, heard that Welcome Break will be installing superchargers on all its services, as the CEO has a Tesla on order.
Going back to Simon's question not wishing to stop to charge, I think most people would want a break driving 200 miles, you could always plan it to stop at one of the superchargers, take your restroom break, have a coffee, answer some of the emails whilst the cars on charge, half an hour is probably all you need ?