When our instructor asked us about the speed of action potentials in cells, I told him that action potentials and two-wheelers travels at similar speeds. He thought that this is an 'interesting' way of looking at it.
Needless to say after the class I tried to figure out the minimum, average and maximum speed of action potentials in neurons. Wiki helped but its not authoritative. Some place it says that the fastest is 110 m/s and other place it is 120 m/s. While slowest one varies between 7 m/s (in Rana frog) to 0.5 m/s (Nociceptors) on Wiki. The average speed would be hard to calculate.
I am looking for any references where slowest and fasted action potentials are described. They would be interesting cases to write a note for classromm.