Vehicles? Brilliant! I've been looking for US and British 1/48th scale 'airfield type' vehicles for years!
There used to be some resin, and short-run injection kits around, but they were expensive, and didn't stay around for long.
Fuel trucks, general purpose trucks such as the 2.5 ton and Dodge, and the same in British stuff would be very welcome, and I've always thought that the right types would sell like hot cakes - see the new Airfix support set in 1/72nd scale, as an example.
As sales and advertising are not allowed on the forum, could you send me a PM with some details when you have a moment, please?