Wow. That really does help. Before looking at your GIF, I was certain it was a woman willingly getting into the car, one leg first, then the other, but now I've looked at the GIF, I can see the driver first throws something (a handbag?) into the footwell of the passenger seat with one hand and then after a slight delay, the passenger appears to be thrown onto the passenger seat having been possibly leant against the car and supported by his other arm. The way she bounces as she lands on the seat is consistent with being more or less carried under both legs, then plonked onto the seat.
I also want to say, I don't think women generally just chuck their handbag into a car's footwell before getting into it, nor do they tend to get into the front passenger seat of a taxi (or fake taxi, if that was the case).