I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... 5 d Q( K2 J, x! P x: P c6 G" E7 v1 @' [
For me, I think car-pool is just to share part of gas "cost" and have some fun on road.....4 ` Y1 Z+ U/ Q9 d; N0 @5 L' g
8 \$ p0 r$ O1 {I usally charge passager 30 bucks for a trip.