There was one of these companies in Minnesota for three decades, but it looks like it dissolved earlier this year: https://finance-commerce.com/2018/04/the-tra

There was one of these companies in Minnesota for three decades, but it looks like it dissolved earlier this year: https://finance-commerce.com/2018/04/the-transit-revolution-that-wasnt/ https://finance-commerce.com/2018/04/the-transit-revolution-... (They never actually built a real system, though).