Cynthia figured she would need a stool to sit on while she gets the scoot out of and into the trunk. She went googling for something that would work and decided on a "Nova Heavy Duty Bath Bench Without Back." It ended up costing $96 with tax and free shipping. The free shipping saved a lot, other sites wanted as much as $35 to send a similar bench.
I bought a garden kneeler bench a few years ago that will work too. Walmart online has them for $29. http://www.walmart.com/catalog/product.do?product_id=2132498