Check out the New SNAP Skateboard. This canadian invention is a folding skateboard. It is designed for easy storage after commuting. SNAP skateboard’s patented hinge design allows it to fold up and fit inside small lockers and backpacks.

The folding deck is constructed from aircraft aluminum and fitted with cruiser wheels and trucks that can be replaced with regular skateboard parts.

More info on the SNAP Skateboard website

This seems like a potentially good idea to implement for longboards too.