Some cars leave a paper trail; the Acura ARX-02a left a name and a place in Acura's list. What follows is what can be said with a source behind it. Its designer of record is Nick Wirth.
The story
The Acura ARX-02a was a Le Mans Prototype constructed by Acura for competition in the LMP1 category of the American Le Mans Series. It was Acura's second Le Mans Prototype, following their ARX-01 which competed in the LMP2 category.
Its place in the line
Where it sits in Acura's history is not in doubt: the Acura ARX-01 came before it; the HPD ARX-03 followed it. Nearby in the Acura catalogue sit the Acura ADX and the Acura ARX-06.