1. There are 4 solid red/white/blue Victory cars. They belong to Bill Ford, Mark Fields, an active VP and a recently retired VP. There is one metallic red/white/blue Victory car. It belongs to Raj. If you were not an officer (+ a few), this livery was not an option for you. You can take a guess how motivated that group of people is to approve multiplying the count of Victory livery cars by 20x. This is to say nothing of the fact it's insanely complicated to paint.
2. Neither the CE nor the Heritage has a hard numerical limit. They have production limitations due to complexity. The Heritage was in the 2Xs in 2017, 3Xs in 2018. You can surmise that the Heritage Gulf cars will total a little over 100. They can and do produce more Carbon Editions.
3. All of this stuff is very super duper secret, because if such information was public, there could be no telling what the consequences to society might be. Human sacrifice, dogs and cats living together, mass hysteria...it's like looking in Marcellus Wallace's briefcase or watching the videotape from the Ring. Honestly, you'd probably die. It's that important this be kept secret.