From what I understand both Model S and X are eligible for the $7500 tax credit. One advantage the Model X has is that the full cost amount can be deducted in the first year on your tax return since it weighs over 6,000 pounds whereas only 30% of the Model S can be deducted. Do I have that right? Can the other 70% be amortized (?) deducted over future years? If that is the case then I am fine with that. If anyone familiar with the tax codes / tax laws that could chime in that would be great. Also would it be possible or a huge mistake to try to trade-in my Model S for a Model X (only 1 month old and 300 miles)?