No, much smaller.... I am very aware of the U of MN solar car. It's probably a third that size, if even that, and is not big enough to take anything but an infant, even if it had a cabin(it doesn't). I've tried googling it a few times with no luck. I suspect it's an AI or mapping project.Maybe a solar powered car? The U of M engineering school has one that sort of sounds like your description, except it's manned and not orange. Clemson has one that matches even closer.
Oh dang! This is from Rochester. Maybe it's made it's way north? Definitely fits on the weird, orange, and self-driving metrics. Not exactly 50's space-shipy to my eye, though.