I was just wondering if there was going to be any higher Octane types (AKI) because in my town you can fill up with either 89, 91, or 93, but i know in a town about an hour away from me they offer 97. And I’ve seen 100, 101, 103, 105, 107, 110 , and I’ve even heard about 120 and maybe higher, (For racing of course). Like my car for instance, likes to run on 110. but the highest i can get my hands on is 97 
. But i think more Octanes would be good to add if it doesn’t take too much work or time.
I agree and disagree with this. It would be great to have higher octanes and be able to run 30 PSI of boost (when turbos come out) with a 12 to 1 compression ratio and make a billion horsepower. However, as you said these types of gas are very limited in availability and therefore an engine designed to run on 110 AKI would only be useful in places where that gas is sold such as the wealthy states of America (Though I’m on your side on this. MAKE MORE OCTANE 
)
I agree with this to a point but as the build stands right now its ok, octane should (and is as far as I can tell it is) based on year and location of the factory, you put the factory in lets say Cuba you will only really have 72 octane for most of the game, put it in Truckee, CA and you wont find high octanes either due to the high altitude, the way it is now is pretty good since most people wont be driving down to the airport to fill up on the still available 100/130 octane leaded. I think maybe more choices of fuel such as nitro-methane, LNG, or Propane would be a better addition in future updates instead, would add a whole new dimension to the game. Also you really wont be running 12:1 with 30lbs of boost, thats a sure fire way to blow up your engine in a hurry, most engines run much lower compression and high boost because of this, if you do boost a high compression engine (my truck for example with 22.5:1 compression) you can only run at MOST 12-15 PSI BRIEFLY and that is really really pushing it, I usually only see 1-3 PSI boost unloaded and around 5-8 loaded with the occasional jump to 13-15 when I floor it although this is a diesel 
A gasoline engine would not be able to handle that stress.
octane should be base on engine use as well, i.e. a methanol or Water injection system for a race car.
but for normal day to day use the working octane should be based around fuel use.
30 psi of boost will need a turbine going 10,000 rpm+ so keeping it working right will be a hard fight.