Whatever this is, it can't possible by cheaper, safer or more accessible than a normal train.

"Sir, instead of placing down 30k lbs of steel and wood for every 1/8th mile of train travel, we can use 300k lbs of steel, wood and brick to build a 10 story tower every 1/8th mile, and then mount a 500 million dollar specialized magnet larger than the average home to the roof. Then we can yeet a bus-sized bullet filled with ~~victims~~ passengers all the way from 5th street to 11th street. This will surely decrease the number of railroad crossing accidents to zero. However, we can't promise an errant gust of wind doesn't obliterate a city block. And, frankly, the birds are simply fucked, Sir."