Unlike Taiwan, people travel by cars a lot. Everyone own at least one to two cars in the family. I remember before I leave America, a friend of mine back in elementary school said, "not having a car in America is like not having pair of feet." It is true. Driving is a survival skill in the States; it will be really hard and inconvenient to travel without a car because American's public transportation is not the best in the world, and the land is huge.
I drive a 1988 GLE Volvo, and the problem of driving an old car is that it could break down anytime. This picture was taken when my car broke down on a highway. So it is critical to know about cars and take care of them. Still, I am impressed by this car because even though it's so old, it still functions well. Good enough to take me to school and back home.
In the U.S., usually people can start driving a car at the age of 16. You can actually start driving at the age of 15 1/2 with a driving permit. In America, you will fist do a written test on driving, then you will have a "permit", that you can drive a car with an adult's supervision. Then you will take the driving test on "actual streets", not training area. A person under 18 must have a permit for half a year before you can do the driving test, so a lot of teenagers get their permit when they are 15 1/2 and get their license when they are 16.
For motorcycles, it is very rare to see people writing scooters, but sometimes there are motorcycles on the freeway. There's a minimum of 125 C.C. to be a the freeway.
In Davis, I usually travel with a bike. Davis is famous for its bicycles; it's a bike-friendly town.
They even have traffic lights for bikes on the streets. I drive my car when I go to school in Sacramento. UCD students also go to school by buses. It's a bus system runs by the university, and the bus drivers are the students. School hires both men and women. My housemates always take the bus from the apartment to campus. It's one of the more convenient public transportation in Davis, which is really fortunate because again, U.S.'s public transportation isn't that convenient. Last time when I took the train, my train was scheduled at 11pm, but the train didn't come till almost 3am. I really miss Taiwan's MRT, train, and high speed railroad sometimes.