CarPlay setup
CarPlay is not available yet. Apple has to grant a navigation entitlement first.
Open Road Ace does not have a CarPlay layout yet. Apple requires a navigation entitlement for any app that displays course geometry on the CarPlay map, and that entitlement has to come from Apple. There is no date for when it will land.
Until then
Use a phone mount or an Android head unit. Both run the same pacing display Open Road Ace shows everywhere else, and either works for any in-car mounting setup.