... because of the neccessary accelleration to reach a velocity of more than 1000 km per hour or 277,7777 m per second. The accelleration must be high enough to reach the speed on the distance - and the neccessary time. I would recommend a two phase travel where both phases are timed equally. The first phase is for acceleration - the second phase to deceleration. You have to accelerate for 360 seconds. By doing so you travelled a mere 80km. That makes an acceleration of nearly an eighth g or 1,2 m per square second. By accelerating at such a rate the system reaches a top spead of nearly 1555 kilometers per hour - or better Mach 1,3. Any lower top speed needs a far higher beginning acceleration. And here is the problem: No cup of any coffee, tea or some other beverage will stand still while accelerating - like shown in the video. The travellers are more struggeling with accelerations in both directions, than be interested in drinking....