Commuters traveling between East Bay and Peninsula cities and San Francisco’s Financial District could see their daily costs climb sharply if gas prices reach $7 per gallon, according to new cost comparisons of driving versus public transit.
People driving an average car that gets 24.9 miles per gallon currently spend about $18.85 per day on gas and tolls traveling from Walnut Creek to downtown San Francisco. If gas rises to $7 per gallon, that daily cost would increase to $21.60. In that scenario, a $13.90 round trip on BART could save commuters more than $7 per day…