Valtra Tractor T series 2017-

The fourth generation T Series that was introduced in 2014 featured for the first time Valtra’s patented hydraulics assistant that increases the engine speed automatically under heavy hydraulic loads. The T Series also features an automatic powershift that switches to a lower gear range when needed at a preset speed.

Information provided by: https://en.wikipedia.org/wiki/Valtra#Stepless_transmission