Millions of automobiles are on the road every day, with that methanol (windshield washer fluid) hazard under the hood!
Has the EPA warned us about this?
they also have 10-30 gallons of gas underneath the driver and/or passenger(s); and how many times have people been warned about that? methanol has a different set of dangers which I've outlined. Biggest one is lack of flame during combustion; but again that's 99.96% meth. Some windshield washer fluids have higher percentage of methanol, others have 0% and the ones with 0% suck. Used to be that they all had methanol but not anymore; and part of that is because methanol is no longer produced from wood and corn, it is now mostly produced during the reformation of Natural Gas (aka methane) which has been for years cheap and plentiful.
also most cars don't intentionally get driven into a pile of burning piles of brush. Different application between tractor and car.
I can't say I've tried to intentionally run windshield washer fluid in an engine (yet)--but I have used it, and quite successfully, as an anti-detonation agent in max-effort forced-induction engines. It worked and worked good, mostly the same as aircraft used it "back in the day". It is definitely flammable.
If perfect combustion occurs the only byproducts of methanol are CO2 and H2O. Cleaner than gasoline and diesel. It has a lot of downsides though, for a motor fuel. Iv'e run the stuff in a LOT of things. Lawn mowers to go-karts to the current race car. At one point I had a KLR250 that I daily rode to work and since gas was like $5.00/gal, and Meth was $0.99/gal at the time, I converted it to methanol and ran it for over a year. Power increased too. Had no trouble out of it at all once the fuel mixture was as close to right as I could get it, given that it was a gas carb converted (never perfect). If I had a way to go to EFI and adjust spark, it would have been a lot better. Over the entire summer months, it cost me a hair less than $19 as I recall to go back and forth to work. The push mower was an accident. It would not run properly and my fiddling with it couldn't figure out why (stupid tecumseh 3hp--I hate them). Ran out of fuel and I grabbed the can, filled it up and a couple pulls later it was running absolutely perfect. Wrote it off as "bad gas" and mowed the neighbor's yard as I usually did during the summer as a kid. It ran out 3/4 the way through the yard. I found it odd becuase it would normally do the entire front and back yard, then our front and back yard, on a tank of gas. Refilled it with gas, ran like poo again. While trying to get it to run right I tipped over the other gas can and noticed that it wasn't gas...it was go-kart fuel. Drained the gas out of the mower, refilled with methanol, ran perfect--and it ran that way for at least 4 mowing seasons until we moved and I left that turd lawn mower sitting at the old house for someone else to cuss at.