Traveling through Canada?

Geography:
Area: 9.9 million sq. km. (3.8 million sq. mi.); second-largest country in the world.
Cities: Capital--Ottawa (pop. 1.2 million).
http://www.state.gov/r/pa/ei/bgn/2089.htm
Medical Coverage:
The Department of State strongly urges Americans to consult with their medical Insurance company prior to traveling abroad to confirm whether their policy applies overseas and if it will cover emergency expenses such as a medical evacuation. U.S. medical Insurance plans seldom cover health costs incurred outside the United States unless supplemental coverage is purchased.
http://www.travel.state.gov/travel/cis_pa_tw/cis/cis_1470.html
Current Road Conditions:
This road report is updated as conditions change and contains the most recent information available. Road construction, weather conditions and hazards.
http://www.gov.yk.ca/roadreport/
**Proof of Insurance**:
Proof of auto insurance is required. U.S. auto Insurance is accepted as long as an individual is a visitor in Canada. U.S. insurance firms will issue a Canadian Insurance card, which should be obtained and carried prior to driving into Canada. Please call or stop by the office for this little yellow card!
Speed limit:
Unless otherwise posted, the maximum speed limit in Canada is 50km/hr in cities and 80km/hr on highways. On rural highways, the posted speed limit may be 100km/hr (approximately 60 miles/hr).
DUI or DWI:
Americans with a DWI record must seek a waiver of exclusion from Canadian consulates in the United States, which requires several weeks to process.
Radar Detectors:
It is illegal to take automobile radar detectors into Quebec, Ontario, Manitoba, the Yukon or the Northwest Territories, regardless of whether they are used or not. Police there may confiscate radar detectors, operational or not, and impose substantial fines.
Firearms and other laws:
http://www.travel.state.gov/travel/cis_pa_tw/cis/cis_1468.html