[aerohead]

I read the article, looked at their website, and got some exterior dimensions.
I ran some numbers for the large-battery, single-motor Ioniq 5, it's the most efficient.
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And not to punish everyone with the details:
1) Solo, at 55-mph, the Ioniq 5 has 310-miles range.
2) With the 'Shorty', range falls to about 283-miles.
3) With a 1980, NASA gap-fillers, range is about 312-miles.
4) With fender blending and attention to streamlining, mpg just climbs.
5) As an aerodynamic 'system,' and for it's fineness-ratio, the SUV-Trailer combination is capable of around Cd 0.1423, CdA 3.9834-sq-ft ( 0.37 meters-squared ). I'll let everyone calculate the range for that on their own.