VIDEO: The Lexus IS F SPORT???s LFA-like digital gauge The motor-powered ring acts as the gauge???s outer rim and slides to the side when the driver uses the switch on the steering wheel to call up information such as mileage or music playlists.???Installing a digital tachometer makes logical sense for high-performance models such as the LFA and IS F SPORT range,??? explains Naoki Kobayashi, chief