This proposal would replace a real and coming solution (HSR) with vague proposals ("improved bus line") and tech that may not pan out for years if ever ("electric airplanes"). I'm skeptical.

The HSR will provide a significant improvement for the Bay Area->LA route, and provide rail service to places that currently don't have it at all (eg. Fresno->San Jose). If we kill HSR, it's entirely likely that we'll end up with both no HSR, no hyperloop, and no super-speedy self driving cars. I'd rather keep chugging along on HSR, and build the hyperloop (or whatever comes next) when it's ready.