SEGAs 3rd Nintendo Exclusive to be Sonic x Mario Kart?

[TheLastStarFighter]

I heard Sonic racing was good. If Sega took on a lot of the work of Mario + Sonic Kart that could free up some resources at Nintendo for another project. This could be a good way to draw attention to Mario Kart U as well. Some of the dream tracks in M+U at Sochi looked pretty cool.