Hunt down the freeman Vehicles
this adds the bike, 2 hummers and the army truck from hunt down the refund to gmod!
note the army truck was never meant for a player to drive it so the view may be buggy.
if you want to activate the mounted gun on top of the hummer, look at it and type without quotation marks "ent_setname car" and then type again without quotation marks "ent_fire car enablegun 1"
edit: the only fix i was able to find for the army trucks view bug was to use the extended properties mod and to use the enter vehicle option as that seems to force the view to center properly