WOODBURY - A supersonic way of travel has the tech world buzzing.

Hyperloop, which was unveiled yesterday, is a high-tech mode of transportation that would use tubes that speed through tunnels at around 800 mph. The pods would be propelled by and float on a cushion of air.

Elon Musk, the founder of Hyperloop, claims a 400-mile journey from Los Angeles to San Francisco would only take a half-hour. He says his idea is an alternative idea to high-speed rail and air travel options.

Long Islanders had mixed reaction to the idea. Some say they hope the technology comes to fruition, while others add that the idea sounds far from safe.

Musk says the project would cost an estimated $6 billion.