I have an appointment tomorrow (Monday) evening to test drive a Model X at my local Tesla retailer. Bit of a silly question, but anything in particular I should be conscious of / pay extra attention to during my test drive? I have spent lots of time reading these forums but this will be my first time in an X and only my second ever test drive of a tesla. (I test drove a MS about 4 years ago with a buddy of mine). Is there any room to deal / move on purchase price or is it generally, tax incentives, maybe owner referral and that is it? Thx in advance. Looking forward to the drive.