I have been approved for Canadian greencard but I would like to come back to USA as I have an H1B for another 2 years. I donot want to give up the canadian Greencard also. I am planning to apply for US visa once I get to canada after doing all of my paperwork for GC. I am going there just to get the GC right now and plan to come back to US.

 Anyone had similer experience? I heard that these days they don't give you your Canadian Greencard if they find out that you are not going to stay there. Will they find out if you fly back to USA? Can anyone help me with this situation. I would like to know if going by plane would make the situation easy or travelling by car is better? How long does it take to get  the final document once you land there. Please help me with some suggestions.......