The proportion of motorcycle owners who also own a car can vary depending on various factors such as location, culture, economic conditions, and personal preferences. It is challenging to provide an exact proportion as there is no comprehensive global data available specifically on the ownership of both motorcycles and cars.
Owning a car alongside a motorcycle offers convenience and flexibility, particularly for situations that require carrying passengers, transporting goods, or traveling longer distances.
Additionally, some motorcycle enthusiasts may own multiple vehicles, including both motorcycles and cars, to cater to different purposes or as a matter of personal preference.
It's worth noting that the proportion can vary significantly between different countries, regions, and individual circumstances. Therefore, it is challenging to provide a precise proportion without specific data for a particular location or group.