This was some footage of custom 955 where Jane was trying to head out but her old Cadillac wouldn’t start. These scenes are a mix of before, during and after the custom was filmed.
She’s cranking the car at first while filming her point-of-view. You’re watching her film herself from a camera mounted on the front windshield. After she gets the car sputtering good and close to starting, the video cuts to an outside angle to capture the smokey exhaust action from all the flooding. You can already see a puddle on the ground that has formed and when she gets the car started, tons and tons of thick smoke comes pouring out for a bit. She gets it cleared out and then there are some shots of the throttle linkage under the hood before we go back to seeing her inside the car doing some revving.