If you are not familiar with all the early videos and interviews from Trion, and/or you do not know as a gamer where to find them.
Take the time to get familiarised with them 1st and i can also help you right here, by starting with this 1st one, there is other videos at Defiance Universe as well as other early interviews that were showed and made before players bought the game.
Defiance a Transmedia revolution Chapter 1.
http://www.youtube.com/watch?v=Ed7j3_xHxBw
In this particular video the developer is advertising the game having things that never was implemented in game:
1 - A real interactive weather system in game that will affect the players immersion dramatically and affecting the gameplay directly and the look of the game itself. 4:00 minutes
2- Vehicles advertised and presented as in game, the same ones as in the TV series 4:59 minutes
3- TV show and game constantly reinforced each other, and battles the players fight in game are changing the outcome of the TV show itself and events of the TV show imediately reflected in the game. 5:18 minutes
Defiance: What is a shooter mmo
http://www.youtube.com/watch?v=I3b0X4YPUAE
1- Vehicles that players can use together as "Transports" in open world to use as resources gathering 1:48 minutes
2- "Thousands" of weapons, that we can collect 2:13 minutes
3- Allowing all platforms to play "simultaniously" inside one mmo universe 3:45 minutes
(Gives the impression for players that they will be able to all join and play together)
There are many other videos and interviews made from 9 months ago to 1 month ago before the game was released.
You can see many of them at DefianceUniverse on Youtube and other webpages and sites.