Brilliant idea. I had thought of building elevated train/road track sections, in a factory then, installing them above existing roads or railways, slotted toget

Brilliant idea. I had thought of building elevated train/road track sections, in a factory then, installing them above existing roads or railways, slotted together delivered by airships. This must be much cheaper though, I don't agree will cause accidents, drivers are amazingly adept at driving close together and missing each-other and other obstacles. Will be no more difficult to avoid, than obstacles found driving in Paris or Rome today.