If you're outside 70 miles, you've got bigger problems. But considering that rush-hour traffic can bring average freeway speeds down to the 5 and 10 MPH range, I'd say this would be a huge improvement for daily commuting. At great expense of course.

The only thing is, something invented for a niche market on Sunday will be made much cheaper on Monday, will be widespread and causing mayhem by Tuesday, regulated to the hilt on Wednesday, the sole domain of big corporations by Thursday, and used for aerial assassinations at-will by the military by Friday.

(My little sequence there takes a cue from this talk, posted on HN yesterday: https://news.ycombinator.com/item?id=16106331 )