This NASA filing undercuts Elon's claim that the Roadster is headed for the Asteroid belt. 1.7 AU is past Mars (1.5 AU) but well short of Ceres (2.77 AU). I think it's fair to call him out for unreasonable exaggeration on that one.
>But astronomers online noticed some discrepancies with the numbers Musk tweeted, and SpaceX ultimately sent a revised orbit to NASA’s Jet Propulsion Laboratory on Wednesday (You can find it by selecting “target body” -143205.) The new orbit shows that the car will indeed travel farther out than the orbit of Mars, but not far enough to make it to the asteroid belt. The belt begins about 329 million miles from the Sun, and the Tesla will reach a distance about 160 million miles away from the Solar System’s star.
https://www.theverge.com/2018/2/6/16983744/spacex-tesla-falc...
It clearly wasn't intentional on Elon's part (why would you intentionally post a false trajectory with contradictory information when the real trajectory will soon be found observationally by 3rd parties? that'd just make you look bad). A technical error was obviously made somewhere. So it's not fair to call it an exaggeration. Just a technical mistake. Call him out for jumping the gun and not verifying first, perhaps.
There are some dots as close as 1.7 AU.