Comment by sheiyei
What I meant was we should collect methane to use as fuel in cars. It happens a bunch here in Finland, and driving a biogas car is totally feasible. At some point the government stopped incentivising biogas refueling stations in favour of foreign dependency-riddled and rare earth metal-laden electric cars, which sucks a lot. I think it's pretty significant that you can make an old car basically carbon neutral, instead of buying a Chinese child labour spyware battery on wheels.
Again, American dairy farmers would never adopt this without massive subsidies. Even then they would fight it like they do every environmental regulation(of which there aren't many). If they can't increase profits they will not do it.
Finland is not the US. Americans will try everything else before doing what other countries do because we believe we are different/exceptional.
I agree it's a good idea. It just isn't feasible in the United States for a variety of reasons.