There seem to be a lot of choices in the high-voltage AC arena, but we deal with some OEMs that are into material handling and 36-80 Volts. So even though our hearts are with the EV'rs, we had to make a business decision to choose what we felt like was a good all-around choice for OEMs and lightweight "daily-drivers". Of course with unlimited funds we'd do more R&D, and with a commitment to buy we could commit to build other designs and variations (one of which should be ready YE '17).
The DC's still have a bit of life left at the drag strips, but that advantage will disappear in 5 years or less IMHO...
George