What are those things called????........?

Question

it's a type of scooter that cops are using now. it's on two big wheels and you just push it forward or back to make it go. and how much do those things run???

Answer 1

segways

Answer 2

Toyota is out with one that is similar and there is another that police are using for crowd control and down town patroling. But there are cheaper than segway on the  market now.

Answer 3

there called Segway's