Madison cab company will run only on Teslas

MADISON, Wis. (CBS 58) -- A Madison cab company is trading in its Toyotas for Teslas. 

Green Cab announced it's replacing its entire fleet. 

This will make Green Cab one of the first taxi companies to run only on Teslas. 

The company partnered with tech start-up Zerology to make it happen. 

Green Cab says they want to stay on the cutting edge of sustainability.