[anonym29]

It has an octane equivalent of 105-110, and an even stronger anti-knock index, you can add a ton of timing.

It also lets the engine run cooler despite burning hotter precisely because of those evap characterisics.

That's not to say there are no downsides. It's less energy dense so you need larger injectors or a higher duty cycle, you get less mileage, it's extremely hygroscopic, it has different corrosive properties, and a different stoich ratio so most vehicles need some amount of modifications and tuning to properly utilize it.

But all in all, it's wildly economical alternative to traditional high performance fuel.