For the record, in 2016, the injury rate per 1000 workers for "automobile manufacturing" as a whole was 6.7; "Animal (except poultry) slaughtering" was 7.2; "Sawmills" 7.3; Tesla's was 8.1, on a level with "psychiatric and substance abuse hospitals", just above "heavy and civil engineering construction", and just below "correctional institutions", to name a few. Tesla claims they're down to 4.6 in 1st quarter 2017, but of course we only have their word for that.
The document further breaks out cases with days away from work, restrictions, or transfers (DART). That's 3.9 for the auto industry in general, 4.9 for non-poultry slaughtering, 3.9 for sawmills, and 7.3 for Tesla (from the WorkSafe report linked in the article).
So it sounds like there may actually be something to this. Weird that they decided to go with clickbait instead of just presenting the data.