Anywhere from 1-100s, depending on income and how much they use/like cars. On average, it's about 8-10 cars.
There is no limit to the number of vehicles a family can have. You can have as many as you want, if you can afford them.
In 1958 the average family owned one. Very few families had two vehicles.
On average, a person undergoes about 9 surgical procedures in their lifetime.
10
During an average lifetime: over 2.5 billion times.
2
47 -_-
2
12
A healthy sow can have many litters in her lifetime. On an average sows are known to have as many as 23 litters throughout their life.
The number of babies that an elephant will have in a lifetime will vary. On average they will have about 5 babies in their life.
On average, an individual in the US will use about 1.3 million pounds of rocks, minerals, and metals in their lifetime. This includes resources used directly (such as construction materials) as well as those consumed indirectly through products like electronics and vehicles.