It looks like SLATE has pathetic EV efficiency. (and a rant).

[Luxrage]

0.30:

0.32:

The 1988 facelift of the Renault Espace was championed by the press at the time for reducing the drag to .32. Touches like the flush mount side windows and low profile door handles do for drag reduction.

Edit: As a benchmark for the slate, according to a hyper-miler website I was looking at, a 2001 ranger has a Cd of .49