There's a new ramp-equipped auto made in the USA called the MV-1. It was designed to be a solid taxi. Also, the National Mobility Equipment Dealers Association lists companies around the nation that sell new and used wheelchair accessible vans and minivans that could be taxis. Vets and non-vets can start a rural or suburban taxi service, and even use a federal tax credit and tax deduction to reduce start-up costs.
Idea No. 34