I drive a 2013 ford focus SE hatchback. Car was working fine and then I went on vacation and came back to find that there was no coolant whatsoever in my vehicle and there is also white foam sitting on top of the motor. Car was locked during my entire trip and I have the only key so I know nobody tampered with it. I even have a plastic sheild underneath so its difficult to access anything underneath the car as well. I dont know what to do and I dont want to have it towed to the dealership. Please help, thank you!!!