Already police forces we have for Spain could be modernized. In Chicago, the Police Department has 50 Segways to move around the city.
Since then they do nothing to persecution, but it is the best to patrol the city. They reach a speed of 20 kilometers per hour, and have the advantages that can enter the buildings go up escalators, elevators.
The Segway, which uses the body are not those who are sold to the public, but they are the I180 PoliceSpecial. They have a greater autonomy (800 km with 4 liters!), and some reflective details. They have blue lights and sirens?
Thanks to the comments received we already know that the Segways are used at various points of the Spanish geography. For example, in the Polytechnic University of Catalonia, Torremolinos and at some points of Madrid.