Using my motorized bicycle as a business

I just read all the messages on a few other threads and did not see my answer, so I am hoping to get some help. I am going to be using my motorized bicycle for a Go-Fer errand business. I want to put on the advertising that I am licensed and bonded, but I am having a heck of a time finding insurance. I live in San Antonio, Texas. I have no car (so no insurance there), and due to the fact this is a BUSINESS and not a personal item, I can't put it under renters insurance. I need actual motorized bicycle insurance coverage in order for me to get my permits and my bond to run my biz. Can anyone please help me out???

My biz is already getting steady buzz and people are anxious to hire us, but we need to get the insurance.

Ok, update: We called a few places and no one can help at this time, but veloinsurance told us that they are working with underwriters to get a power assisted bike policy as this is a growing market. The man my hubby spoke with stated he is building a list to show that this is a much needed market. The agent said he thinks it will be at least a year before a policy designed for our bikes will come out, but at least they are working on something. I think if we all called or emailed then they may be persuaded to create a policy sooner. Velo Insurance does have a $750.00 plus options for Bikes, so that is the option you have to ask for. I hope this helps others. We are still looking for something in the meantime.