parked again on Tuesday at the lot across from the firehouse on Half Street between L and M (behind 7-11). Still $20 though by the time we got there all the spots were full so the attendant asked us to leave our key in the ignition and just park in the lane between spots (along with everyone else that was arriving). It was a bit unsettling leaving an unlocked vehicle and a key, but when we returned the car had been parked in a spot, and the attendant was holding all the keys. It's a great location for $20.