Doubtful: 1: Methane leaves the atmosphere a lot faster than Co2 2: The methane is a result of breaking down food where the carbon was captured from the air b

Doubtful: 1: Methane leaves the atmosphere a lot faster than Co2 2: The methane is a result of breaking down food where the carbon was captured from the air by the plants that were the source of the food. 3: (And I'll let you figure out the numbers) You need to calculate the methane to Co2 ratio of the expected release of methane vs Co2. I suspect there is significantly less methane released than (equivalent) Co2 from cars. That being said, who wants to go back to horses? I don't.