The sd1 is the name of a series of large executive cars produced by british leyland the sd refers to the specialist division your dad may well have driven one of these cars ours did this is original art inspired by rover it is unofficial and in no way associated with rover rover and related marks are registered trademarks of tata motorsour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g t