I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....& h: h/ A) T5 D4 R! o2 W3 \
! |# r. ~* t2 P9 x: M# n: r5 ]For me, I think car-pool is just to share part of gas "cost" and have some fun on road..... R" Q: a" g) f$ x ; V) N* w. _. ~$ r3 x0 |; }. PI usally charge passager 30 bucks for a trip.