I do not know, because I have worked for them riding a bike
Yes, at quite a good rate too, most people end up earning off the petrol payment as well as the drops! Use referral code AN167586 for £50-250 (depending on vehicle/location) after 20 deliveries!
Yes, i think it is 45p per mile. Use code AN167586 to get £100 joining bonus
Yes they will pay fuel for your car but i do not know how much.
You won't be able to I don't think, and when you upload your insurance they will realise you are using a car. Ubereats allow it I think though