There are many, and it depends how you are coming into the country (plane, land), so the best thing to do is check out the government of Canada's website.
Customs, Immigration.
Crossing the Canadian border would require a driver's license and passport.
One can learn about this specific border crossing on many websites online. Wikipedia provides detailed information regarding this border and where the exact location is on the longitude and latitude line.
The United States and Canadian border is a peaceful border that for many years was not guarded. However 9/11 changed that. Now it is required for all people crossing the border to have passports and identification papers.
Just the Nexus card suffices, but it's wise to have your passport when crossing the border, anyway.
There are more than one border crossing from the US into Canada, so your question is not precise. Also, traffic conditions vary. From the Windsor crossing to Toronto is going to be a few hours, approximately.
== == About six hours, depending on the delay at the Canadian border crossing.
He will probably be cheerfuly arrested by the next Canadian cop he meets. He may even be arrested at the border crossing.
Prescott-Ogdensburg Border Crossing
Immigrations laws are enforced by two federal government departments - Citizenship and Immigration Canada and Canada Border Services Agency. They also work with the Canadian police, the Canadian Security Intelligence Services, and the Minister of Public Safety and Emergency Preparedness to enforce these laws.
The U.S. Canadian border
Karni border crossing attack happened on 2005-01-13.