He will have to wait for many years because the current base price of 911 Carrera is around 99,000$ and the cabriolet model will cost more than 110,000$.
1 Bitcoin is currently only 15,500$ which is 7 or 8 times less than the actual price of the car.
Now it is 99,200$ vs 37,800$ so 38% close
And it is about a new one.
BUT "Porsche need to be not damaged and not older than 1 year."
Year old one may be easily 20% discounted. Then maybe it is closer to 50% now.