I can give you my experiences with ethanol vehicles, and would solicit further response especially regarding corrosion, fuel pumps, seals, etc. in modern fuel injected vehicles. I know of others that have successfully converted cars to run on E98 (running well for at least the last half year), and I personally have been doing experiments on my own 1990 toyota supra and I'm currently running E98 with no modifications to the stock vehicle(truly zero mods). This is a 7MGE engine, naturally aspirated, inline 6 toyota with EFI and automatic spark advance and closed-loop air/fuel ratio adjustment via an exhaust oxygen sensor (factory stock, bought in virginia). I started by increasing ethanol percentage by 5 or 10% and did this all the way up to 85% ethanol before i noticed slightly rough idling on cold start. This is due to open loop operation during warmup I suspect. Once the loop closes with the oxygen sensor and the air/fuel ration is appropriately adjusted everything smooths out, and I've even got better 0-60 times and good high speed cruising than on 100% gasoline. I'm doing mileage testings now. Let me know how serious you think corrosion would be for this modern a vehicle. I remember when everyone was cautioning using biodiesel in diesel vehicles w/out modification because of fuel line compatibilities, etc... and now almost everyone that has done the testing says it can be used w/out modification in most diesel engines. I wonder if the same will prove true for ethanol? On that note, what do you think of mixing 5% water in with the ethanol? I'm sure that will get your hair raised.