And remember, biking or walking is no more environmentally sound - per person-km travelled, using a typical western diet - than a fuel-efficient automobile with a single passenger, but a private jet produces more than 10,000x the CO2 per km. Everyone can do their part to reduce overall CO2, but the rich and powerful are destroying the planet at a rate several orders of magnitude faster than you or I simply because it's convenient for them.
We should probably stop squabbling over who's corporate version of highly-processed, manufactured, plant-based meat and food products we're going to substitute for animal proteins if we really care about worldwide carbon levels.