Well I am very surprised but I went to go duplicate the error and it is no longer occurring. I tried this many many many times before and it always locked up, but now it appears to work (albeit a bit slow, but that isn't Rstudio's problem).
To your question, if this is still going to be investigated, the last message was
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.5/car_3.0-0.zip' Content type 'application/zip' length 1471184 bytes (1.4 MB) downloaded 1.4 MB
And then it froze. I let it run overnight to check if it was my computer being slow and it was not that, it was just frozen.