We tried a parking lot pickup service several years ago using an extended electric golf cart. Several reasons why this was discontinued: a golf cart does not do well during wet and cold weather, could not use it the next day when someone forgot to plug it in overnight, had problems fully staffing volunteer drivers. My suggestion if you do this service would be to invest in a vehicle that can be used in all weather conditions and has all of the safety features found on an automobile.

had many of the same issues as Greg.  We had an oversized electric golf car with canvas zip down sides for the rainy / cold weather (we are in SC) Had to plug in for 45 minutes mid day.   Most of the volunteer drivers were men who truly enjoyed it (I used my social butterflies).  it did become an issue with not being able to staff it; hence, security took it over and they have  a dedicated very friendly officer who runs the service 7 am - 3 pm M-F.  If you need position description / education information I'm sure I can locate it and happy to share vs having to reinvent the wheel.

Yes, we have a care-a-van 'hands-free' cell phone the drivers use. Emergency numbers, along with other dept. numbers are programmed in. When someone needs a pick-up, they call the care-a-van number which is posted on the light poles in the parking lot. We also have business cards in all of our service areas and entrances for individuals to pick up. Drivers are covered under the hospital liability plan as long as they are driving on 'hospital campus' and/or approved routes. 

We have trainings every 6 months, including Columbia Fire Dept. that trains them on the fire extinguishers that are placed in each van. In fact, our drivers have more training than some of our other departments that drive hospital owned vehicles! 

I attached a copy of the business card we use.