No we can't. Germany is not America. We still spend more on R&D by an order of magnitude, but implementation is falling by the wayside. We have slightly more pressing issues than transportation like our national debt.
The National highway system is the largest civil engineering feat in the history of the world. It just needs to be updated, but America was never about public transportation, rather owning a car was long thought of as apart of the American dream or a right of passage and its still that way. Until this mindset changes, we can never invest as much in public transportation as we should.
I recently drove from Texas to Boston and the sheer size is a thing of inspiration. It felt like there were no boundaries. The trip span 2000(4000 to and from) miles and 48hrs(96hrs)
Sorry, I do want a high speed rail, but the same things were said about flight before it became mainstream. Now flying is more hassle than convenience.