Rent a TH!NK City from Hertz
We have them available in Burlingame, downtown SF, Fremont BART, and Palo Alto at this point. For those interested who do not live near/in Palo Alto, it may be easier for them to call:

toll free number: (877) 559-7856 (or) email sfstationcar@hertz.com
(or) Call Palo Alto Hertz (Charleston & El Camino Real) (650) 493-2009

Here are initial "promotion" rates:

Hourly test drive: $10.00
Daily: $24.99
Weekly : $99.99
Monthly: $279.99 with $20.00 discount per month (or more) if kept 6 months or longer.

"We have kept the promo rates as low as possible to encourage people to try these new cars. They will likely be adjusted at some point.
We are excited to have the cars and would be glad to work with interested people so they can experience it as well.
I am very interested in finding out what people think of the car after they try it!"