When you talk about how you can save time and money by sharing your ride with your friends or colleagues then you need to understand and comprehend the fact that while it may seem that driving may be expenses but t carpooling can decrease your fuel expenses considerably. I went for the idea to buy used cars in Japan online and I decided to go for a used car only because I could save money on the purchase as well as when I could carpool to work with my colleagues. What other ways can you save money commuting?