The utility will be collecting data on the car in normal use. They are looking for data on how much power is used by the vehicle in operation and also the charging current. All of this data will help the company plan what their future infrastructure needs will be. Large scale adoption of plug-in vehicles in the future could put a lot of extra strain on the power grid so the infrastructure needs to be beefed up to accommodate it. Manitoba Hydro has been doing a lot research into alternative fuels like biodiesel in addition to the current work on the plug in hybrid.
[Source: Manitoba Hydro via GreenCarCongress]