MKSC - rGV1 - 48"00 [ex-Non-ZZMT WR]

Replay of a 5lap time of 48"00 on Retro Ghost Valley 1. Check out mariokart64.com/mksc for World Rankings in MKSC Time Trial. I missed the MT on the first corner lap 2 and then forgot to shroom... How is this even a 48"00?