Canada shares an 8892 km border with it's southern neighbor, the United States, and it's the largest undefended border in the world. All highways and roads have imposed speed limits. An international drivers license is not required and you must be at least 16 years or older to drive in Ontario. Most rental car companies impose an age restriction of 25 years, and require a credit card to rent vehicles. Cigarette smoking is banned from all public places including hotels, restaurants, public transportation, etc.
Some establishments provide designated smoking areas.
Some city's have different by-laws which may allow you to smoke in some area's, most however do not, so it is best to ask someone who knows for sure before you light up. The drinking age in Ontario is 19 years, and proof of age is required at almost all drinking establishments, all young people will be carded. Drinking and driving is strictly prohibited and is an extremely serious offense. If you plan to drink, have a designated driver. Weather in August is usually sunny and hot with little rain.