My understanding is that the Prius 1 does not come standard with cruise control. Does anyone know if it is a factory installed option on Prius 1? Or can a dealer install. Price either way? Are the other differences between Prius 1 as compared to the Prius 2 as follows: no EV mode available no touch trace controls $1000 less MSRP availability August 2009 Are there any other differences? Thanks