Our rail system is built for slow speed freight hauling and passenger trains have to share the same rails (and give priority to freight, which is why we have en

Our rail system is built for slow speed freight hauling and passenger trains have to share the same rails (and give priority to freight, which is why we have enormous unexpected delays on our passenger trains). It's simply not feasible to run bullet trains in the country without building entirely new tracks. It is an enormous and expensive undertaking to build new rails across 2600 miles, through a couple enormous mountain ranges and more.