Manipulating the Ferrari market isn't very difficult, if one dealer has the financial balls to buy virtually every available car in a small production run, and then start hyping the car to create a demand.
In 1987, I was doing mechanical work for a dealer in Portland , Oregon who actually did this to the Ferrari Daytona Spyder market, as well as 330GTS, and Maserati Ghibli Spyders. When there is ONLY 50 or so real Daytona Spyders in the world and you obtain five or six of the only ones that may be for sale, you can start manipulating the prices. Pre internet- the venue to sell these cars was Autoweek. This dealer started placing ads for ONE Daytona Spyder for at least 100K over the market value. The ad would run for a full four or five weeks, and then he'd put a SOLD right over the ad copy. A month went by, and the next Daytona was advertised, but now 200K higher than market. Five or six weeks later, the SOLD ad came out. This went on for a half year, until the prices had reached a half million dollars, and then the cars started selling. Investors perceived this was a sure way to double their money- Wall Street Journal did a story on the rapidly rising Ferrari prices, and in 1988 the Ferrari market caught on fire. This manipulating of the market was an incredible thing to witness, and it's certainly made an indelible impression on me, what a "bubble" is.