Can 3G and Wi-fi Working at the same on the android?

The answer from question above is now, there is no method yet. But i think its possible. This is one of the project :
http://mobisocial.stanford.edu/news/2011/03/let-wifi-and-3g-connection-work-together-by-hacking-connectivityservice-java/

But i still cant implement the method in link above. I hope, soon, there is this a simple way to do this. So i can connect internet on android with my 3G and connect Local Network with wi-fi at the same time easy. Just like there is simple method with laptop or notebook.