When these new 2x2 slopes first came out.
I got a few and started to play around with them.
I noticed that you could mate the tip of the slope to another one and they met at 45degs.
I only had 4 of them at the time so I played around with making a nose for a train.
I first mocked up a simple tram and built the nose on that.
It was a nice look, so I tried it on my Santa Fe.
I think the Santa Fe looks better with the slopes on it.

Then a few months late James Mathis designed a tank car using this method.
He had made an 8 wide tank car in MlCad.
I liked it allot and so I then worked on making a 6 wide version.
I was able to create a really nice six wide tank car which can be seen in my train cars section.