It wasn't NASA.

Here's what will happen to the Tesla that SpaceX shot into ...
www.nbcnews.com/mach/science/here-s-what-will-happen-tesla...
The Tesla Roadster that rode SpaceX's Falcon Heavy rocket into space Tuesday afternoon seems poised to overshoot its mark, with company CEO Elon Musk tweeting a diagram showing that the car's current trajectory will take it beyond Mars and into the asteroid belt in its planned orbit around the sun.

Because they wanted to take the car for a space spin

reasons.

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