My Aveo was sold by Chevrolet Thailand to run on gasoline 91, 95 or E10 91, or 95 or E20 - which is 95RON - whatever that means. The car had various parts modified to cope with the ethanol and some people had suggested that running on E10 would get better economy as the difference in price is only 1baht per liter. I tried this with several tanks of E10 (using scangauge e to measure economy) and it's untrue; it's the same economy as E20.
E85 is only sold at a handful of stations in Thailand but some companies are selling E85 conversion kits - they don't really do anything to prepare the engine for E85; they just plug into the ECU and fuel injectors, I don't think it's a good idea. It's also a matter of economics; if a company could sell a car to run on E85 and afford to warranty it, it would save heaps of sales tax and thus boost profits. An example in Thailand of this would be the new E-class Mercedes NGT which is now around $6000 cheaper just because it's now E20 compatible instead of only E10 as before.