Any way you look at it, this is a terrible idea.
Cars lose value. They are a disposable item that gets used up. The more expensive the car, the more value they lose.
If you spend $100,000 on a new car, in four years it will be worth less than $50,000.* That is a lot of money to lose in four years.
In addition to the loss of value, you will need to buy insurance, which, for a $100,000 car, is incredible.
If your heart is set on this kind of car, you should definitely save up the cash and wait to buy the car. Do not get a loan. Here is why: Your plan has you saving $1,300 a month ($16,000 a year) for 6.5 years before you will be able to buy this car. That is a lot of money for a long range goal. If you faithfully save this money that long, and at the end of the 6.5 years you still want this car, it is your money to spend as you want. You will have had a long time to reconsider your course of action, but you will have sacrificed for a long time, and you will have the money to lose. However, you may find out a year into this process that you are spending too much money saving for this car, and reconsider.
If, instead, you take out a loan for this car, then by the time you decide the car was too much of a stretch financially, it will be too late. You will be upside down on the loan, and it will cost you thousands to sell the car.
So go ahead and start saving. If you haven't given up before you reach your goal, you may find that in 6.5 years when it is time to write that check, you will look back at the sacrifices you have made and decide that you don't want to simply blow that money on a car.
Consider a different goal. If you invest this $1300 a month and achieve 8% growth, you will be a millionaire in 23 years.
* You don't need to take my word for it. Look at the car you are interested in, go to kbb.com, select the 2012 version of the car, and look up the private sale value. You'll most likely see a price that is about half of what a new one costs.