I've been trying to land something but it's just so annoying, train is barely bumpable, you can't take a good runup to bump/land on it because it disappears if you go too far away from it (and you can't "remember" it using Dannye's SCM because you just get stuck inside and have no way out unless you reload your saved game). Landing or bumping a moving train is just ridiculous, guess the only way to do a decent stunt is by derailing it like Streammys tried but as he says it doesn't show in replays... God this challenge is even worse than boat ones -.-