I recently purchased a new 2007 Prius. It now has 11,000 miles and I have a question. When the car is coming to a stop or in gridlock traffic - it makes a sound similar to an egg timer. It's a ticking sound as if you were turning the knob on a minute timer backwards. The dealership told me it was normal and it is the sound it makes when the generator kicks in. I do not recall hearing this in the past. Does anyone know what I am referring to? Thanks for your help.