It is only their scooter fleet being replaced, not their cars or motorcycles. Also, motorcycles are used throughout the US almost exclusively for traffic control - not emergency responders. In NY, scooters are likely used just by the meter maids - not the SWAT team.

Why not make their scooters green? They will likely save on maintenance costs as well considering that they are modular and *far* simpler than a real motorcycle (or gas powered scooter for that matter). Not to mention advancing the market and the state of the art for electric vehicles.