Task: Question Answering
Input (English): Last Friday , my car broke down . I had to get to work Monday , so I decided to ride the public bus since it ran fairly close to my home and work both . Monday morning I got ready early and set off to wait at the bus stop . After sitting for quite a while , the bus finally pulled up . I let others at the stop get on first , then I got on . I asked the bus driver how much the fare was and he told me . I paid the fare by sticking my money in the box near the bus driver , and walked to find a free seat . I found one near the back of the bus , and I sat down . The bus ride was fairly quick and uneventful . I noted that the ride went the same route that I did . Once the bus stopped at the stop near my work , I disembarked . That 's how I rode the public bus . 
Question: Why did they take the bus?
Output (English): car is broken down