As of 4/13, 230m are US drivers. CDC and DOT are reviewing data involving 42,060 reported US cases of a common & severe type of death in individuals involved in traffic. Right now, these events appear to be extremely common with 1 in 106 chance of dying in traffic collisions.
As of 4/12, 6.8m doses of the J&J vaccine have been administered in the U.S. CDC & FDA are reviewing data involving 6 reported U.S. cases of a rare & severe type of blood clot in individuals after receiving the vaccine. Right now, these adverse events appear to be extremely rare