There's no single definitive answer to the percentage of people who own a car in Canada. Statistics Canada doesn't directly track car ownership in relation to the total population in a simple percentage. Data on vehicle registrations exists, but this includes things like commercial vehicles and doesn't account for multiple vehicles per household or individuals without driver's licenses.
To get a percentage, you would need to make several assumptions and combine different datasets, which would lead to a potentially inaccurate figure. Therefore, a precise percentage cannot be given.