That's not the Musk space debris we should be concerned about. The car is orbiting the Sun between Earth and Mars, extremely unlikely to be a problem for anyone. A needle in a planet full of haystacks.
Starlink, on the other hand, is several hundreds of satellites orbiting in a shell in low Earth orbit. Close calls happen all the time with these.
https://www.space.com/spacex-starlink-satellite-collision-alerts-on-the-rise
According to this article, Starlink satellites are involved in over 1,600 close encounters (within 1 kilometer or 0.6 miles) each week.