There was an interesting topic on one of the nightly news shows ^[1] this evening about increased ridership on mass transportation systems around the country last week that officials say was due in part to record-high gas prices.

One of the points mentioned in the broadcast centered around U.S. citizens’ gas price threshold — how high we are willing to allow prices to go until a significant number of us turn from cars to mass transit.

According to the piece, energy economists speculate that gas prices would need to raise another $0.25 – 0.75/gallon for this significant change to occur.

What’s your gasoline threshold? What’s the most you are willing to pay at the pump before you start using alternative means of transportation? (Or are you already?)