ground effect machine , GEM (Abkürzung)

Beyond was the roadway where the crew had just finished stowing the three foam crates in a large ground effect machine.

The ground effect machines they used for most trans-portation did not need paved surfaces, just vaguely level or gently sloping land.

The sound of a ground effect machine approaching from the direction of the Centre disturbed Tavernor's reverie.

Oxford's major industry was the production of cars and GEM'S (Ground Effect Machines), particularly the Windrush.

Our problem is no longer the innovation, but the chain of innovations, not the supersonic transport, or the breeder reactor, or the ground effect machine, but entire inter-linked sequences of such innovations and the novelty they send flooding into the society.