Radical NASA Propulsion Concept Could Reach Interstellar Space in Under 5 Years

Very interesting article that theoretically simplifies and speeds up space travel

"To be clear, the concept currently doesn't exist much beyond calculations on paper, so we can't get too excited just yet" says the article.

Even so its seemingly relative simplicity, in theory, compared to the more complex concepts, does not require the mastery of more complex theoretical physics that so far seem to remain theoretical. Sounds as if it is more easily testable . . . that would course include a hefty cost.