Well yeah, but if you have to do a transfer, that's the tricky part.
Also, Bong, a tip since you said ingame that one of the testificates got killed (or did it just go invisible? There's a glitch that makes them do that in the cart) but you didn't say how. At the end of the rails, have it point to a spot where it drops one block down, that way the testificate doesn't take fall damage (I guess. Fiah had that problem initially.) and get killed.