Suicide doors

This car seems significant for several reasons. All of the vehicles are from the 80s but they went back to the 60s and included a 1965 Lincoln town car with suicide doors as Helena’s vehicle. They demonstrate it by the Chauffeur opening the suicide door as she approaches.

Is this a nod to Helly’s attempted suicide in the elevator?

OR

Could this be foreshadowing Helena’s murder? I ask this because this is almost the exact car JFK was assassinated in, with the convertible top.