I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....( R5 e+ E! t0 E3 T
$ g9 [1 e3 R. i% V7 a: G) WFor me, I think car-pool is just to share part of gas "cost" and have some fun on road.....* m' [* G( a* y+ N0 }* P$ A3 b
/ o; H+ |/ y2 u+ N+ |+ w" hI usally charge passager 30 bucks for a trip.