will be around for some time. so if you want to save money, the best way to do it drive less. that s certainly the best way to help insulate your pocketbook from what is happening. reporter: alinda valenzuel savelf 50 she drives just a few miles fro her home to the slug lines. with the gas prices, i think soon people will start walking to the slug line. reporter: she says she saves nearly $90 a week by slugging. she is not the only one cashing in. reporter: you are driving at speed, you are not, it s not traffic where you would be burng more gas. reporter: there are slugging rules, you can t talk on cell phones and should say hello to and good-bye to drivers on the way in and out. overall not a bad deal to protect the wallet from the pricey pumps. it would freak me out to ride with a total stranger. right. but i hear that it s like the same drivers over and over, it becomes like a community of people that know each other. that s how it works. after a while you get t