Apologies if this question has been asked here before, but a quick search search didn't bring me any results.

I'm a Canadian citizen and I just got my US visa for permanent residence.

My question is if I go to USA by road, can I come back the next day so that I can keep on working here in Canada until my green card is mailed to my wife's address in USA? If yes, will I encounter any problems when I try to cross the border again without a green card?

If that will be a potential issue, can I get my wife to mail me my green card from USA to Canada once it arrives in US so that I can cross the border into US? Thanks in advance.