The main reason I use it is because of who I normally travel with- my 91 year old grandmother and my son. If I'm solo, I will park in the back because I can open my doors without worrying about hitting someone else (or vice versa) (my left arm is useless, so when I open my door it can catch the wind and swing open). On my bad days, I'm drugged out normally and shouldn't be driving on THOSE meds.