Originally Posted by dj_bytedisaster
Not quite. The Email in parts was published in at least two publications available online (Motorsport Total, Autosport.com) and there is no indication given that the current car was meant to be run, so after a look into the regs, everyone will have come to the conclusion that the test is to be run with a car at least two years old. And that was over a year ago, too. And on top of that it was immediately followed up by an email from FOTA saying that such tests in-season are verboten. Not too difficult to see why most smaller teams didn't react, especially since the email asked for getting in contact with Pirelli if the team is interested. That to me implies not to react if you're not interested. Most smaller teams simply cannot afford to pull an old car out of mothballs ans cough up the money for a three day test, especially if they cannot expect to gain anything from it due to the car's age.
As I understand, the Merc test was the result of a renewed offer made this year and that offer was not made to all teams. At least Sauber, Lotus and Force India say so.