hmm yea, it could be topped out to say 32, but people dont have to use that many , could be a in a test patch, see how people like it and if they can handle it etc
Just let um practice around the track, maybe about 20 (thats what i do, gets them around your speed, depending on track/setup) while your doing that, go have some fun :P, then when you get back, the should be able to set respectable times.