Kyle, Ryan,
I think in the very near future you will see a conversion of golf mowers from the current power plant/hydraulic driven systems to units that have a smaller power plant that drives an onboard electric generator which drives the unit and powers all the systems. These units use much less fuel as the combustion engines are smaller and can supply the needed energy to the generator while operating with low RPMs.
Less fuel, more powerful, and no hydraulic hoses or motors to fail and kill grass. I'm guessing that within 5 years we will see units like this mowing our greens and fairways.