How fast does the presidential motorcade go?

[FerrariFerrari]

This is a Question that has been intriguing me
for a while. I have heard that it never goes
below 90mph and occasionally can get up to
110mph. Does anyone have more info on this
topic? I am speaking primarily of the US press-
idential motorcade, but would love to here of
the speeds of other countrie's presidential
motorcades. It's not really an important
question, just an one that I am interested in.

Thanks in advance.