grepdisc writes "Newspapers in Boston are fawning over a report by the American Public Transportation Association that taking public transportation saves money over driving. How can one possibly save $12,600 per year, when the inflated estimates of 15,000 miles per year at only 23.4 miles and $2.039 per gallon costs only $1,310, and a high parking rate of $460 per month results in under $5600. Is the discrepancy made up of tolls, repairs, the cost of buying a car and ignoring train station parking fees?" Everyone's situation is different — and it's easy to have a chip on one's shoulder while estimating prices. But for those of you with the option, what kind of savings do you find (or would you expect) from taking one form of transport to work over another?