Massa swallowed his tongue

Felipe Massa was unconscious when the paramedics first arrived on the scene in Hungary. When he came out of it he started to panic so badly, that during ride from the accident site to the track hospital he swallowed his tongue according to reports. Also, according to unconfirmed reports, a tracheotomy was done to guarantee his breathing.

Recall this was also done to Mika Hakkinen at Adelaide by Dr. Sid Watkins after a bad accident during the F1 race.