Use a reliable workflow and professional gear. If you want to do that for a commercial work, I would suggest to hire someone who has experience because you will need some.
Did you try to create one panorama inside a car? If not, you should try first, post your panorama and ask questions about specific problems you got like light, problem with nadir, unstable equipment, etc.
I cannot answer with 1 +2 =3
Luc Villeneuve
Professional Photographer
President IVRPA 2016
IVRPA - Québec 2016 conference organizer
IVRPA - Prague 2015 conference organizer
Board of directors 2014 - 2016, 2020