Variable displacement

Sorry if it's already been brought up, i did a quick search with a few terms and found nothing here.
Are there any plans to include or thoughts as to whether or not variable displacement (displacement on demand, active fuel management, multi-displacement, variable cylinder management) will be included?
I imagine it would be a b*tch to properly code and implement but it appears to be growing in popularity with manufacturers, seeing as the game goes to 2024(?) it seems like a realistic feature to include.
here's the wiki if anyone wants to do some research http://en.wikipedia.org/wiki/Variable_displacement
Are there any plans to include or thoughts as to whether or not variable displacement (displacement on demand, active fuel management, multi-displacement, variable cylinder management) will be included?
I imagine it would be a b*tch to properly code and implement but it appears to be growing in popularity with manufacturers, seeing as the game goes to 2024(?) it seems like a realistic feature to include.
here's the wiki if anyone wants to do some research http://en.wikipedia.org/wiki/Variable_displacement