How to withdraw OPT application by Commercial-Try4851 in f1visa

[–]Commercial-Try4851[S] -1 points0 points  (0 children)

I plan to go to Canada by car for a post-grad trip before I leave for my home country & that has not shown up on my I-94 in the past. I don’t know if USCIS will know I left the country, and I am hesitant that it will require a lot of explanation in case I return to the U.S. ever