In-Roleplay Racing or Character Background:
The Racer doesn't wish to share his name. Let's just say he is a highly positioned member of the finest Strike Force there ever was.
He often incognito leads dangerous expeditions on their scouting division - and wants to enter the race in his free time to see if he still has what it takes in his advanced age to keep going on secret missions in the field, and outrun whatever can await him out there, or if it's time to stick to his desk and bridge of big ships.