Toyota did well with the marketing of Lexus.... plus the fact they always score highly in customer satisfaction surveys gets them noticed!
I only very recently heard of Infiniti, never heard of Acura - they should take a leaf out of Toyotas marketing strategy because I'd heard of Lexus, but it took me a while to latch on that it was Toyota - even thought the Lexus dealer in Coventry is next door to the Toyota dealer!
D'OH!