Symbol 3678 from ISO 7000 - Title/Meaning: Transmission, continuously variable (CVT) 
Function/description: To identify the control that activates the continuously variable setting for transmission operation. To indicate that the transmission is in CVT operation mode.
Own work using: iso.org/obp/graphics/grs/7e286897-eb57-4f95-b1a2-d246853a7d3a 200.png
Vectorization:  Mrmw