According to the article it would still be 93% efficient after 1000 charges which I think works out to 300,000 miles.
Other than the annoyance of having to stop approximately every 300* miles it would make cross country travel acceptable.
*300 miles plus or minus, new tech seems to be increasing that distance.
That is good news! I'm all for progress and technology improving our lives.
I do question the 300,000 miles in 1000 charges though. If you have a 300 mile range, that would mean you waited until the battery was completely dead before you charged it, every time. I fill my gas powered rigs up at 1/4 tank or so, more when I know I'm taking a longer trip, or leaving a place with cheaper gas. I'd say 200,000 miles would be more the practical number to use.