Maybe the 1st AMC / Jeep Concept

I'd pick the Eagle too, but this one out sold all the rest.

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The Cherokee was a second in sales and definitely important, and the Eagle was a prediction of the future. But thanks to mismanagement, Peugeot killed the Eagle.

I'd call the Eagle the most important car of the 2010s. The prediction of the Outback. 30 years too early.
I drove one of these on a long trip when I was in high school. Waaaaay underpowered. I almost killed all of us trying to pass another car on a stretch of 2 lane in Illinois. The guy I was trying to pass was doing 50 mph on a 55 mph highway. I found out the hard way that the Plymouth Voyager had a top speed of about 55 mph when "overloaded" with 4 high school kids.