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Cake day: June 15th, 2023

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  • This has me insanely curious as to where these are common and what are their emissions laws. Time for a trip down a rabbit hole.

    I looked into getting one of these or converting my own car to be gasoline and methane about 15 or 20 years ago. Here’s what I learned during that time. I don’t know if any of this legal information is out-of-date now. During the really early days of bi-fuel cars, homebrew cars were very bad polluters because they’d skip the emmisions systems altogether. This changed when the law was put in place requiring catalytic converters on all cars that burned gasoline.

    The challenge then with a bi-fuel car was you needed to build an emissions system that is compatible with two entire different fuels, with different combustion products. That is not a small challenge. This is fine for the gasoline side, however, there isn’t really a catalytic converter for methane because the exhaust gasses were actually cleaner than exhaust from a gasoline engine even after passing through the catalytic converter. So there was no market to create a cheap methane catalytic converter because it would have been nearly useless. The law didn’t care though and there was no exception for bi-fuel cars.

    There WAS an exception in the law for methane only cars, which is why you could actually buy methane (CNG) cars from major manufacturers like the Honda Civic GX:

    source

    If you wanted to buy a used one of these, you can still find them and fill your CNG tank from your home’s natural gas line.

    Autotrader link showing Honda Civic GX for sale




  • I would see it being similar to having 2 gas tanks in a car where one is for a high octane fuel and the other for a low performance fuel like ethanol.

    And these exist completely separate to EVs. They’re called bi-fuel vehichles.

    “How Do Bi-fuel Propane Vehicles Work? Bi-fuel propane vehicles typically use a spark-ignited internal combustion engine. A bi-fuel propane vehicle can use either gasoline or propane in the same internal combustion engine. Both fuels are stored on board and the driver can switch between the fuels. The vehicle is equipped with fuel tanks, fuel injection systems, and fuel lines for both fuels” source

    They aren’t common in the USA because of they way emissions laws were written which made it uneconomical in many cases for auto makers.

    There isn’t the same challenge in EVs, especially where we’re talking the “fuel” is just electricity which is common to both chemistry batteries. I see no challenge for EVs.













  • I have a USA-centric view, and I’m not sure how old you are, but you don’t have to go back very far to have those same risk (or worse!) for different reasons.

    Like having casual sex can give lifelong diseases

    Social acceptance for seeking treatment is much better now than 20 or 30 years ago. Moreover, HIV was death sentence back then, not so much anymore with modern medicine. Even contraception was harder to get ahold of as a teen 30 years ago. Now if any teen needs contraception or birth control, there are many legal and legitimate ways for them to get it easily.

    the right wing bearing down on everyone’s freedoms (except theirs ofc),

    I love how far we’ve come in the areas social justice (and we have more do to here). 30 to 50 years being gay would render you a social outcast as a teen. Telling others you were an atheist may have got you disciplinary actions from your school. If we’re looking back 50 years, we’d be right on the edge of the end of the draft to be shipped off to the Vietnam war which happened to many 18 and 19 year olds. This says nothing about the negative experiences of people of color have received at the hands of law enforcement, justice system, an unequal treatment from the education system.

    I would never want to be a teenager now.

    I fully agree with you here. The biggest risk is for their childhood mistakes to follow them for the rest of their lives. After us old folks that didn’t grow up with forgettable childhoods die off, society will evolve to forgive youthful mistakes as it will be 100% of the population that has documented past mistakes they’re not proud of, but this current transition time will be painful for the younger generations.