Why Musk put his $100,000 Tesla in the inaugural Falcon Heavy flight

Why is the price of a roadster relevant? Why is it in the title?

tl,dr: twitter exchange between someone online and elon musk

@highqualitysh1t My only thought on this is "Why?"

@elonmusk Replying to @highqualitysh1t I love the thought of a car drifting apparently endlessly through space and perhaps being discovered by an alien race millions of years in the future

I call bullshit. The car is a product.