If West Des Moines isn't yet open when you need it, consider an alternate route through La Plata, MO and a stop at the Depot Inn & Suites where there are two 80A destination charge stations open to the public 24/7. I recently stopped there while driving from Independence to Coralville. I have dual chargers so that helped minimize the Depot charge time, but it still was a long 2.9 hours. The Depot is operated by a very nice young couple and is kind of a railroad theme museum as well. I promised that couple I would come spend the night sometime.