The Channel Tunnel One of the biggest engineering projects ever carried out and costing around 10 billion to build, the Channel Tunnel runs under the English Channel for 31 miles from near Dover to near Calais in France. The tunnel is in fact a complex of three tunnels - one takes trains from England to France, one takes trains from France to England, and the third is a service tunnel. The Chunnel has not been without its problems - financial or safety.
Cars also go by train.
Basically you motor to the British or French terminal, drive on to a special train, and drive off at the other end.