I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... 2 u- L4 O. i# g* W* u4 k% V2 W8 D" v* h) r4 Q# s/ A8 ]
For me, I think car-pool is just to share part of gas "cost" and have some fun on road.....! O: q D$ L' u# j2 {
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I usally charge passager 30 bucks for a trip.