text: In conclusion classes online could be good,but not that good. Is a good option for people who work during the day and they can take them during the night or conversely.Thousands of people around the world use cars. It's an all-around good mode of transportation. Unfortunately, the fumes that cars emit are harmful for the environment. There are ways to limit car usage. Limiting car usage has many benefits such us the decrease in greenhouse house gas, the decrease in smog, and resources are conserved.