I talked to Suzie Simpson at Summer Jam West 2019.

Tell me about your ride.
I do a girls rhythm and rock camp in the summer. My theme is female characters and music events. It is a Kia Sol so, I named it Soul Sister. Ramona and Greg talked me into it. Once you start it, you will be hooked. I started at the Hot Times Festival about a year and a half ago.
Anything else?
I love it! People come up and talk to you that never would. You can be parked somewhere random and people come over. It makes people happy. People are always taking pictures. It is like having the Doo Dah parade 365 days a year.
Is this your ride (primary car)?
Yes.