Scirocco Central

Hi there,
just had a new Viper green Scirocco arrive today only to be told by the salesman that the digital speedometer readout cannot be changed from kmh to mph. Can this really be the case or can it be altered, any advice would be appreciated.

I know its been discussed before, but its never bothered till now. How do you get both doors to open at the same time? By this i mean just by presssing the remote once.