There is a respawn jump bug. In the tunnel section if you use a mushroom to get big, you can't get out from the tunnel. You can test it.I want only help you with this information to fix it.--Snake (talk) 17:54, 2 October 2015 (UTC)
If the next DLC pack comes soon, this should be a stage due to the amazingness. Tpointer56 9:48, 9 October 2015 (UTC)
After like one third of the track, while you drive north to the 270-degrees-curve to the left, there is a ramp where you jump over a part of the road. If you are very fast while jumping over that ramp (try using a Mushroom), you get respawned mid-air for no reason. -- Leseratte (talk) 18:53, 13 October 2015 (UTC)
Invisible wall above the ramp
In the ramp before the 270-degree turn, there is an invisible wall above the ramp.
If you trick the ramp from the middle-left of the road, you hit the invisible wall and drop to water.
The version is 2.16.1.
--Unsigned comment by BetaBleeds (talk).