Which of the following is a negative externality connected to automobile transportation?

1. Driving faster than the speed limit is not allowed, even though individuals are able to do it, and many want to.
2. In an accident, a person who chooses not to wear a seatbelt becomes an object moving around the inside of the car, possibly hitting other, belted-in, passengers with lethal force.
3. Petrol is taxed on a per-litre basis.
4. Petrol is imported, and thus increases the trade deficit.
5. While stuck in traffic, you have a chance to listen to your favourite CD, which you haven't had the time to do in other places.