Well Marvin just turned 100K and the problems have started. Just the other day I went out and cleaned the car up real good and the next day I come back and there's water in the footwell of the driver's side only. This was after I got back in and my running shoes were soaked and I figured that's where the water came from. So I wet/dry vac the water and turn on the heat on the way to work the next day to help evaporate the water and when I come back to leave work there's a puddle there again. The fluid is definitely water and odorless and also the coolant reservoir is at the min level and is usually at max. I'm thinking heatercore or related hoses. Any other ideas? Also the friggin airbag light is on now and won't go out. This happened the same time time as the water leak but I can't say that they are related for sure. Any different ideas and how hard would the heater core be to change?