Yeah doors/small and uncomfortable. I wish I could drive people (makes more) but at the same time I got my car for me. It's not a fancy car I wish, once I'm not in debt/have more money I want to graduate to cooler cars like a Lotus Exige.
As an aside, delivery can be fun as far as exploring a city and meeting random people (mostly the food workers) but it's a way to get out. I am destroying my car though putting like 1000 miles a week on it or more.
I think once I'm out of debt I won't drive/donate plasma anymore and just use my spare time for other things provided a have a good paying job like I do now.
I would think the burden is on them to prove that you were. They were just digging for a reason to deny the claim.
If the police report mentions an second individual in the car unrelated to you then they might start digging around for your name in Uber or Lyft, but most of the time that is probably just a standard question to screw over the unwary.
I do food deliveries primarily since my car isn't accepted as a passenger car