Running 21st century electric rail-bus-tram on streets and elevated guideway using virtual track. No actual track required. In operation in 2018, Made in US approved because factories already in Boston, going into Chicago, Los Angeles, Philadelphia, San Francisco next.  Only Honolulu still in the 19th Century spending $500 million a mile.
https://www.youtube.com/watch?v=RnGyaPgrGKQ