Thanks!
Just a bit more info – in no way do I want to distract from your awesome purchase, but hoping that this might enhance it…
1 – TRACK DAYS
When you have signed up, and attend the event, you will be assigned an instructor. Depending on your progress, and on the driving school that is conducting the track day, you may be set free to drive on your own that day, or maybe the next…
The track will be relatively full of drivers, each with instructors on board. Your instructor will stay on board – at least for the first few sessions - until he is satisfied that you have improved enough to be set free.
2 – CAUTION - DRIVING COMPETITIVELY OVER THE AGE OF 50 OR SO
Referring to the mountain drive mentioned above, after reversing my direction away from down the side of the mountain, the next correction was out of my reach. I had been leading four other drivers on this mountain run, which proved to be exceedingly fortunate, because I was about to desperately need them.
The car switched lanes (fortunately no one was approaching from the other direction). It crossed both lanes and hit the mountain's rock wall at about 55-60 MPH.
The impact was so hard, that my car bounced off the wall and landed in the incoming lane. Fortunately I had my racing gear hooked up, and I stayed in the car. But I could not move. It required an emergency vehicle to come and take me to the nearest hospital.
Trying to abbreviate a long story – my back was broken and I could not move.
As days & weeks went by, my friends & family kept saying "Why don't you write that book about audio that you have always complained that needs to be written?" And six months later,
Get Better Sound was completed.
Two years later, after multiple surgeries, I managed to win my sixth Atlanta area auto-x season championship. But it was VERY close – it took the last event for it to happen. And the next year, I was way-y-y too slow, IMO...
The following year, my wife (!) insisted that I acquire a much faster & more nimble car, and so I did. Modified it within a hair of its' life. I go out in it to compete at the beginning of that season, and I am easily in the fastest (both power/weight ratio & handling) car out there. There were probably 60 competitors out there that day.
I was 45th out of 60… 
I realized that I still knew what to do, but my reactions had slowed. IMO, that's why you don't see successful race car drivers at age 50-60 or beyond.
And it's why doing a track day or three can be a real help to you as you learn your limits, not the car's.
Sorry for such a long-winded post!
I hope & expect that you will be thrilled with your Tesla!