moving trains

i've hopped aboard a moving freight train, and before you give it a try, i warn you of two things. The bed of the railcar is higher off the ground than you probably imagine and so, you can't jump on a moving train without hanging off the edge of it, which is uncomfortable and a little unnerving, and the next problem is that once you squirm your way onto the bed of the railcar - the train seems to be going a lot faster now that you need to jump off. tuck and roll jimmy.