Testing week of May 23, Clue number 4

[1]

Here is clue number 4:

Raptor’s Offroad Track is last,
Go there and now please drive fast,
Across the bridges, through a gate,
Sightseeing, a bubblecraft is your fate,
Now fly back in and look around,
A loop-d-loop and tunnel found,
One side only will let you in,
Two final letters, you now will win.

Good luck!