I'd also like to add in 3) no stop and go traffic. That, by far, is one of the worst contributors to poor fuel economy in cars. If we could all go directly to

I'd also like to add in 3) no stop and go traffic. That, by far, is one of the worst contributors to poor fuel economy in cars. If we could all go directly to our destinations in our cars without stopping for traffic/stop signs/stop lights, our fuel economy would look a whole lot better.