I remember reading a sci-fi book in the late 90s/early 2000s which I really enjoyed, but can't remember the title.
It was set in an alternate future where people are tested at the end of school and divided into classes - 'Ests' for most, 'Alphas' a scientist class for those who get 100%, and those who fail become another class, the name of which I've forgotten. The protagonist becomes an Alpha before running away to join the underclass, where he helps a prostitute, takes up motorbike racing and falls in love with a fellow racer. Memory gets a bit hazy as to the ending, but they go on to bring down the system and it involves a sentient computer with an obsession with the film Casablanca.
I think the title contains a number and refers to the career track of motorbike racing and I'd guess it was written late 80s/early 90s.