Coca-Cola Blimp

Installation:

1: Install this mod:
https://gamemodding.com/en/gta-4/helicopters/23765-goodyear-blimp.html

2: Replace the "tourmav.wtd" in "C:Program Files (x86)Rockstar GamesGrand Theft Auto IVpcmodelscdimagesvehicles.img" with the one provided