Context: It is easy to see why motorcycles are appealing to a large number of people , old and young alike . These vehicles are great for heavy daily commutes because they are small and maneuverable , making it possible to weave in and out of traffic and split lanes to get ahead of the crush of cars that are otherwise stalled . This practice is not only legal , it is encouraged as a method of relieving congestion and getting at least a few motorists off the roads faster , hopefully cutting down of pollution as well .

Question: why are the cars all stalled ?
Options:
0. because of congested traffic
1. None of the above choices .
2. because these vehicles are great for heavy daily commutes
3. because motorcycles are appealing
Answer: 0