Only if the police cruiser is built with power in mind! Can you imagine how many people would attempt to outrun a police car if they all accelerated like the Civics/Pruis?
I do, however, really like the hybrid taxi fleet. I feel that's a step in the right direction.
I wonder who else would benefit from using a hybrid vehicle? US Postal Service? Any other livery type services? US Military?
Speaking of military, I believe the Army is using a few fuel cell vehicles in their fleet now. They're doing a testing phase. I need to find that article and post it here.