Vehicles are about 1km from any rpt aircraft so would need to be a heck of a fuel leak. Fuel leak anywhere that ignites seems pretty unlikely. Also of course that signing the authority to use airside absolves GCA of any liability. Most insurance is $10m but gca requires $20m plus a clause that says on airport use not excluded. Don't worry...next year they will manage to find more embuggarances. Otherwise what's the point of all the shiny bummed safety people they have. But safety when actually flying at the airport? It's a ctaf mate...arrange it yourself.