Back in the 1990s, there was a Formula F1 race car that tested a technology that never made it into official racing... enter the race grade CVT. The racing CVT consisted of a steel push belt and pulley system, albeit, modified to handle 850hp. This transmission was banned in the F1 series because it gave an unfair advantage -- turning laps several seconds faster!

While CVT technology in the 90s wasn't that great, it is remarkable that they were able to do what they did! Today, better understanding of ring packs (or possible toroidal technology instead of push belt), better fluid technology, transmission cooling, and computer tuning could make an even better race transmission -- if they allowed the technology back.