how do u get the banchee in to the tunnle without crashing

i can captur the banche but not drive it in to the tunnle. ?

 

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Kill everyone around you first, then make sure the banche is the only thing left, then put your handicap on severe, then shoot your SMG then let it chase you throughout the tunnel, till where you need it, then board it and kill the elite, thats what worked for me.