Mind the Gap
Halo 3: 4 vehicles, 1 gap on Legendary using Cowbell, Catch, Thunderstorm, Mythic and Tough Luck.0
The best way to get any vehicle across that second gap is when u come the area with two choppers, the barrier, and the fuel-rod chiefton. In one of the buildings, on the floor is a deployable gravlift, grab it, go the gap place it between the two concrete barriers then just drive into it. I use this trick it has never failed be sure to have to have the right skulls on. Using this trick you can get any vehicle of your choice over the gap with some serious air.