Question 821685
That is circumference of {{{pi}}} meters.  How many pi is in ... 
...wait... just adjust for the units.


{{{((105*1000*meters)/(60*minutes))(1*circumf/(pi*meters))(2*pi*radians/circumf)}}}


Note how the units work, and that this expression begins with the road speed in meters per hour (although 60 minutes is used for the 1 hour time).