Would this work?

[Scott_UK]

Just wondering, would this work or would I have to do each vehicle in a array?

Citizen.CreateThread(function()
	while true do
		Citizen.Wait(0)
		local currentVehicle = GetVehiclePedIsIn(GetPlayerPed(-1), false)
		while currentVehicle == "VC_SUPER" or "VC_SPORT" do
			Citizen.Wait(0)
			Do something cool
		end
	end
end)

[Vespura]

@Scott_UK

local currentVehicle = GetVehiclePedIsIn(GetPlayerPed(-1), false)

That gets the vehicle itself, not the vehicle class like “SUPER” or “SPORT”
Take a look at this:

Cfx.re Native Reference

@Scott_UK

while currentVehicle == "VC_SUPER" or "VC_SPORT" do

This wouldn’t work, if you want to check for both of those classes, while keeping the change from above in mind, try this:
while (currentVehicle == 7) or (currentVehicle == 6) do I’ve separated each check inside it’s own ( ) so you can see/understand it better