If the aliens are smart enough, they'd realise that the vehicle is clearly someone's unwanted garbage, which is pretty much exactly the case. The original Road

If the aliens are smart enough, they'd realise that the vehicle is clearly someone's unwanted garbage, which is pretty much exactly the case. The original Roadster is the vehicle which Musk had the least technical involvement with, and which was severely laden with technical debt courtesy of Eberhard and Tarpenning. (Most crucially, the pointless and arguably counter-productive use of the Lotus shell.) This technical debt nearly sank Tesla from the start, which would have basically turned US$100 million of Musk's money into ash. I'm not surprised that Elon had no love for it and was happy to see it flung into space... and maybe explode.