Mrs. Adams loves her Honda Element, but the fuel rate is 23 miles per gallon on the highway and is mostly used to commute from her home in Atlanta to school (17 mi, one way). She's been look at used Toyota Priuses on the internet, and can find a reliable used Prius, which has a fuel rate estimating to be 41 miles per gallon, for around $6,500. Given that gas prices currently are averaging $3.00 per gallon, how long will it take for the Prius to pay for itself in gas savings?