<P> In October 2013, the development team of the OpenMDAO software framework released an unfinished, conceptual open - source model of parts of the Hyperloop's propulsion system . The team asserted that the model demonstrated the concept's feasibility, although the tube would need to be 13 feet (4 m) in diameter, significantly larger than originally projected . However, the team's model is not a true working model of the propulsion system, as it did not account for a wide range of technological factors required to physically construct a Hyperloop based on Musk's concept, and in particular had no significant estimations of component weight . </P> <P> In November 2013, MathWorks analyzed the proposal's suggested route and concluded that the route was mainly feasible . The analysis focused on the acceleration experienced by passengers and the necessary deviations from public roads in order to keep the accelerations reasonable; it did highlight that maintaining a trajectory along I - 580 east of San Francisco at the planned speeds was not possible without significant deviation into heavily populated areas . </P> <P> In January 2015, a paper based on the NASA OpenMDAO open - source model reiterated the need for a larger diameter tube and a reduced cruise speed closer to Mach 0.85 . It recommended removing on - board heat exchangers based on thermal models of the interactions between the compressor cycle, tube, and ambient environment . The compression cycle would only contribute 5% of the heat added to the tube, with 95% of the heat attributed to radiation and convection into the tube . The weight and volume penalty of on - board heat exchangers would not be worth the minor benefit, and regardless the steady - state temperature in the tube would only reach 30--40 ° F (17--22 ° C) above ambient temperature . </P> <P> According to Musk, various aspects of the Hyperloop have technology applications to other Musk interests, including surface transportation on Mars and electric jet propulsion . </P>

How fast can you travel in a hyperloop