From the context, this likely relates to (RR3) — a mobile racing game — and a file/modification called character2.dat , possibly involving texture or character data edits (often tied to “hot” meaning modified or attractive driver/suit visuals).
This led to a theory: Firemonkeys was building a or at least a livery-style customization for the driver . The “hot” system would allow you to change your driver’s appearance between races without reloading the entire track. rr3 character2dat hot