I have calculated and compiled [b]a list of the top straight line speeds of every vehicle in Halo 3[/b]. They are measured in squares per second, or [i]sq/s[/i], where 1 square is the width of one of the squares on the grid seen in forge on Sandbox. I am confident saying all speeds are accurate to within 0.5sq/s. For comparison, a spartan runs at a top speed of 2.5sq/s. Vehicles with boost have their speeds both with and without using boost. Banshee (no boost, drifting) - 4.5sq/s Banshee (no boost, flying) - 7sq/s Banshee (boost) - 19sq/s Chopper (no boost) - 7.5sq/s Chopper (boost) - 9sq/s Ghost (no boost) - 5sq/s Ghost (boost) - 9.5sq/s Hornet - 9.5sq/s Mongoose - 9sq/s Prowler - 8sq/s Scorpion - 5sq/s Warthog - 9sq/s Wraith (no boost) - 4.5sq/s Wraith (boost) - 8.5sq/s Hope this will be helpful! (somehow :P) EDIT: Mutoid Log was kind enough to convert these into more familiar units; km/h and mph: [quote]Banshee (no boost, drifting) - 49km/h, 31 mph Banshee (no boost, flying) - 77 km/h, 49mph Banshee (boost) - 209 km/h, 133 mph Chopper (no boost) - 82 km/h, 52 mph Chopper (boost) - 99 km/h, 63 mph Ghost (no boost) - 55 km/h, 35 mph Ghost (boost) - 104 km/h, 66 mph Hornet - 104 km/h, 66 mph Mongoose - 99 km/h, 63 mph Prowler - 88 km/h, 56 mph Scorpion - 55 km/h, 35 mph Warthog - 99 km/h, 63 mph Wraith (no boost) - 49km/h, 31 mph Wraith (boost) - 93 km/h, 59 mph[/quote] [Edited on 12.09.2009 11:20 PM PST]