The phrase "We went by bus" is a concise statement indicating that a group of people traveled using a bus as their mode of transportation. This expression is commonly used to describe a journey that was made using public transportation, which is a cost-effective and environmentally friendly option for commuting or traveling short to medium distances.

The popularity of bus travel in the United States can be attributed to several factors. Firstly, buses are widely available in most urban and suburban areas, making them a convenient choice for daily commutes. According to the American Public Transportation Association (APTA), in 2020, there were approximately 10.6 billion public transit trips taken in the United States, with buses accounting for the majority of these trips. This data highlights the significant role that buses play in the country's transportation landscape.

Additionally, buses offer a cost-effective alternative to driving, especially for individuals who do not own a car or prefer not to use personal vehicles for environmental reasons. The APTA also reports that public transit reduces greenhouse gas emissions by approximately 37 million metric tons annually, demonstrating the environmental benefits of using buses as a mode of transportation.

Furthermore, bus travel can be a more relaxing and less stressful option compared to driving, as passengers can sit back and enjoy the ride without the need to focus on driving or navigating traffic. This aspect of bus travel is particularly appealing to tourists and visitors who are unfamiliar with the local area and prefer a more leisurely mode of transportation.

In conclusion, "We went by bus" is a simple yet effective way to convey that a group of people traveled using a bus. The widespread availability, cost-effectiveness, environmental benefits, and stress-free experience offered by buses make them a popular choice for transportation in the United States.