Train robbery game, overdone theme?

Worried I'm wandering into a saturated theme here but I've turned up limited results so far. Was contemplating a game revolving around sending team to rob trains. Closest game I found was this:

http://boardgamegeek.com/boardgame/2985/train-raider

But Train Robber combines it's own network building system that I wasn't looking into.

I'm picturing an auction system where you both hire and equip your team, who then board one of a number of trains on the board. From there I'm picturing something of a press your luck system, each car of the train you move through carries a reward/risk situation, such as drawing from a deck that either contains goods you may steal or a risk such as police, a trap, perhaps angry livestock. Proceed too far and risk what your team has collected. Probably involve easy/medium/hard train cars with correspondingly increasing rewards and risks.

So, there's a ton of train games but I'm not seeing a lot of ones focusing on robberies other than the above and The Great Train Robbery game. I'm curious if anyone else knows of others, and if it's not over saturated, what they think of the idea above.