Livestock consume far more feed grains (mostly corn) than they produce food on their own [1]. The transportation costs to feed them are greater than the transportation costs would be if we were to feed humans on plant based foods, so transportation would actually be reduced if we lowered the amount of animal products we consume.
That is a US-specific article. In the US, animal agriculture contributes about 2.8% of US total CO2eq emissions, whereas US transportation sector contributes 26%.
Not sure what your point is. I never said emissions related to animal agriculture outweigh total transportation emissions. What I said was reducing meat consumption would lower transportation emissions associated with food.
[1] http://news.cornell.edu/stories/1997/08/us-could-feed-800-mi...