It's a while back, but I think it's because you have to be a resident for at least 6 months to be eligible to getting a driver's license in a given country. An

It's a while back, but I think it's because you have to be a resident for at least 6 months to be eligible to getting a driver's license in a given country. And getting the driving experience is not cheap if you don't know people who have a car you can borrow!