Tony, how about posting the check figures to the odd numbered hockey
problems?  My guess is that a single machine with about a 6 foot blade would
travel a bit over half a mile.  At top speed that would be between 3-4
minutes.

Much like figuring how far one walks or rides to mow a lawn.  Wondering when
one of the mower manufacturing  companies will introduce a riding mower that
is shaped like an ice resurfacer for those true hockey fans who want to mow
their lawns in team colors.  Bob Hamilton.