Welcome to Vodafone Community
so i bought another. you can only have 1 per phone number
also found in the FAQ
It is not currently possible to have more than one car associated to a single mobile number. We are working on an update to make this possible.
as the last time the app was updated was july last year and youve all but scrubbed the vauto from your site i shall not be holding my breath.
or do you actually have some concrete info that an app update is coming?