That doesn't make sense. The breakeven point for a solar panel is around 10 years (assuming you're using it solely for your own power generation purposes, that is how long it takes for the panel to "pay for itself" in offset electricity costs).
The charging stations are there to charge vehicles. To keep them breakeven on power (forget about land/rent/taxes/maintenance) they would need a field of solar panels.
Hardly seems like a logical approach.
My guess is more that they will sell "upgrades" to the vehicles, they mentioned the large touchscreen and upgradability in the article. Perhaps certain future software enhancements will be paid, in order to generate some residual revenues.
