Would travelers forgo taxis and ride a bus to the airport? The folks that run public bus systems for Hillsborough and Pinellas counties don't think the idea is so far-fetched. The Hillsborough Transit Authority wants to lease 3.7 acres at Tampa International Airport to build a transfer station. HART now runs a route from downtown Tampa that carries 66,000 riders a year to the main terminal. The agency would link four more routes to the new airport stop, adding an estimated 54,000 customers per year. The Pinellas Suncoast Transit Authority is "chomping at the bit" to run a route to the airport if the transfer center is built, says spokesman Bob Lasher. PSTA thinks 80,000 riders annually would take the bus from Pinellas. If the airport's governing board approves the land lease today, the transfer center could open sometime next year, said HART spokeswoman Kathy Karalekas.