You have Asked and I have listened the Water Stadium is back but only 1 lap this time. map was originally inspired by the PS1 game Hydro Thunder and also its later creation Hydro Hurricane.
40 second AT Time is super fast have fun with that one, beatable but precision is needed thread that needle. don't bonk on spinny things.
HINT: for super fast time HUG THE WALLS most of the time anyway and also DO NOT LET GO OF THE ACCELERATOR AT ANY TIME DURING THE RUN OTHERWISE KISS YOUR AT TIME GOODBYE.