hehehe nice one Jasta!
check out the film in 'cunning stunts vol2' i did same in a spit.
kweassa the tunnels are bugged, i tried to taxi through and still blew up half way through.
there is no way to fly through one unless HT codes it different
EDIT: lmao, i did the same in a spit EXCEPT, not at 500 MPH as i just noticed wtg!