Thats pretty dumb if you ask me. The whole reason for a snowblower is to get out and snowblow before all the cars drive down the snow, and with this the tractor will be compressing all the snow to ice, and the blower will let it all behind!
Might be handy by a garage door, but thats about it.
The contractors that use this type of blower typically contract entire blocks of driveways and assign maybe 80 drives per tractor, all done before commuters leave for work.
To be competive they clear a drive in 2-3 mins or less as most are merely 1.5 or 2 car lengths long.
With an 8ft rig on a 100 hp tractor the operator backs up to the garage door, drops the blower, drives out and continues onto the next drive.
All done B4 the commuter even has his coffee.
Simply awsome to observe a street being done.
Also the contractor returns later in the AM after the commuter has left to clear any left over snow.
Guy I know contracts, like 800 drives every year for the last 10 yrs or so and runs 8-9 tractors to do so.
Most of his equipment is on 6 month leases (shared with farmers in summer) and renewed every 3 years as he can't afford breakdowns.
All his drivers are salaried retired truckers who don't mind 3 AM shift starts for that nice income. (unlike others that only pay as required for part time)
They have no choice but to use blowers as city ordanances forebid pusher plows.
Also because his equipment is topnotch he enjoys the best of operators available and he has waiting lists of canditate drivers.