 Toyota later exited the WRC to concentrate their racing efforts in Formula One, but in 2017, 11 years after the Celica was discontinued, Toyota returned to WRC with the Toyota Yaris.Toyota Team Europe (TTE) was also the first to introduce the "anti-lag system" (ALS) in their Group A ST205 Celica GT-Four rally cars, a technological breakthrough that was later adopted by other teams.The Celica GT-Four concept started with a convertible prototype displayed at 1985 Tokyo Motor Show.