Has anybody calculated the reaction time that would have been required to avoid that crash? I've personally been in 2 accidents in the last 25 years where I "saw it coming" but was not prepared to do anything about it. Both times there was a vague "hmm, this is unusual" moment followed by a "WTF!" moment followed by "how much swerving or braking can I do without losing control?" moment followed by ... WHAM!! I learned real reaction time in a real unexpected accident is much, much slower than my reaction time in a practiced / rehearsed setting such as when playing sports. Ever since I've heard the details of Mr. Brown's fatal accident I've wondered whether he had a chance at all, even if he had not been using TACC.