With Chicago's gas prices heading towards $2.35 and $2.40 per gallon (according to Chicago Gas Prices), a number of taxi drivers are asking for an increase in cab fares to compensate for the price increase. But to even consider the issue, the city council requires that the drivers turn in a petition signed by 10% of the city's 17,000 licensed drivers -- and when THAT'S been verified, the council has 60 days to hold hearings. Which means that the summer driving season might be over before the fare increase is even considered.