Like not literally people who flip them, but people who are flipping them for profit. 

The venerable German sports car maker says it will crack down on people who have been speculating on the rising value of the company's rarer GT variants

Speaking with Car & Driver  Porsche’s head of GT road car development, Andreas Preuninger said “I don’t like this business of people buying our cars to make money on them. That was never our intention.”

Specifically, Preuninger mentioned that offering a manual transmission in the new 911 GT3 has vexed owners of the manual-only 911R, who now complain their cars have lost the exclusivity that made their cars so valuable in the first place.

Luckily, Andreas doesn't care who complains.

"If there are people wanting to buy cars like that [manual GT3], then as a company we should try to fulfill that, to meet that demand.”

In an attempt to stop the speculative buying and selling of its limited-production GT specials, Preuninger told the publication that Porsche will begin monitoring who's flipping cars and simply ban them from buying another one in the future.

“If you’re flipping cars, then I think it’s understandable that you won’t get on the list for the next car if we have more demand than supply.

Preuninger emphasized the highest performing models should be in the hands of customers who will use them most. "It’s not a punishment but a strategy: to supply the cars to the customers who will really use them.

"I think that’s just fair.”