Inspired by the sleds used to test supersonic planes and spacecraft, the teams are challenged to build a superfast railway... but all usual forms of propulsion are banned.
Not all programmes are available on 4oD. Please see our FAQs.
Inspired by the sleds used to test supersonic planes and spacecraft, the teams are challenged to build a superfast railway... but all usual forms of propulsion are banned.
Not all programmes are available on 4oD. Please see our FAQs.