SOOO! 45 mph, chain collision, my Up! was number three in the line and number 4 was a semitrailer that didn't hit the car. Airbags didn't eject though. Hmm =)
link to the local newspapers article regarding the accident:
https://www.ba.no/nyheter/trafikk/trafikkulykker/trafikkuhell-i-troldhaugtunnelen/s/5-8-722284