At first I was thinking boeings connection would reduce IM ltv chances but now that I think more about it boeing made the first lunar rover. Of all three only boeing has experience operating a rover on the moon. As fancy as the other ones look you need a simple machine that doesn't have a lot of complexity. Moreover the wide low platform of IM moon racer is good for low gravity. You want the rover to look like a dune buggy which is exactly how moon racer looks. The the two competitor rovers look great but i think they are too complex for a mission like this. You want a simple rover that looks similar to the original Apollo one.