There will most likely be a Fallout 4. Also, there are plans for a Fallout Mass Multi-Player Online Game (MMO) but the rights of making the MMO are under the legal debate between Interplay (Makers of Fallout 1,2,Tactics,Brotherhood of Steel) and Bethesda (Makers of Fallout 3 and publishers of Fallout:New Vegas). Also Bethesda purchased the rights and now own all the rights (legally debated) of the Fallout Franchise and told reporters that they were going to DEVELOP at least 3 Fallout games (Fallout 3, Fallout:New Vegas, and Fallout 4, which is far from being released). There will probably be more Fallout games (hopefully because they are my favorite games, Fallout 3 FTW!!) and they will probably be developed by Bethesda.
Occasionally Fallout: New Vegas will freeze, but not as frequently as Fallout 3.
fallout: new vegas 2 I've heard.
Fallout: New Vegas
now
Fallout New Vegas is the fifth installment in the Fallout series. It is for the Xbox 360, PS3, and the PC.
Fallout new Vegas
No, you can't get married in Fallout: New vegas, but you can have sex in the game :)
fallout new Vegas will be on PlayStation 3 and Xbox 360
As far as other people know. Probably. Because they have so many people who like Fallout New Vegas, that if they make another one; everyone would want it. Hope that will get you exited! :)
In my opinion, Fallout 2.
There are no drivable vehicles in Fallout New Vegas, unless added by a mod.
Fallout New Vegas is all one game.