The car does have duel front airbags, but actually the car preformed exactly as it should. Due to what appears to be very light damage to the front the airbag didnít deploy because all it wouldíve done is punch you in the face, since you werenít moving toward it. From the angle of the hit, you hit your head on the B pillar (the support between the front and back doors), and the only thing that couldíve helped you with that would be side curtain airbags which werenít available until I think 2003 in the 300m. (I could be wrong about when and what they were available in, but they werenít available until partway through the run of 2nd generation LHís.)
Sorry to hear about your injuries though, but at least they werenít any worse, since it looks like you left the road going highway speed.