So I am going on my 3rd week with my Model S and it has changed the way I look at cars forever it is that good. I do have some concerns over the interior holding up with 2 young kids (4 and 10 months) over the long run. I have the next gen leather seats and premium interior upgrade. I am being overly sensitive right now as its brand new and the whole keep it pristine thing is just being blown out of proportion by myself on my new toy and reality is setting in to just enjoy. I have a rear booster for my 4 year old and a car seat facing backwards for the infant. I have seat covers I found on amazon so the seats aren't actually touching the leather so thats the only precaution I have taken. Any other Model S parents out there have a kid necessity package or other must have items in their S?