After years of stumbling and scepticism, Rajaram's Skybus made its first successful public test run in Goa recently. Though its inventor and engineers were elated, it is still not clear whether they will reap a reward for this mass transit heresy. The skybus is essentially a fusion of a bus and a train. Its carriage looks liek a bus, but it runs like a train, and instead of the compartmentes running on rails, they hang below the rails and slide 10 metres above the regular road traffic.