[BAracer]

From the organisers tech sheet, it was an mx-17 29k motor in Heli_ca's car.

Maybe it was an older motor with a red end rather than the current white one.

Well spotted. 

However...

When you look at the 'rpm at the wheel at 12v' column on the tech sheet, it suggests that the motor is closer to a 23k version rather than 29k...