This is probably the most boring track you can do in Arcade, the RP Short boost-skip doesn't seem to work and you get only one boost on this track, there's nothing interesting over regular time trial so I figured I'd just try and slug the Blitzwagen around on it

Lap 1: 01:45.890 Lap 2: 01:36.530 Lap 3: 01:38.460 Lap 4: 01:38.650