earthmine != Street View

Has anyone else seen a suspicious SUV with what looks like a tall rectangular speaker on top in the Bay area? I was at the Noe Valley courts in San Francisco when an SUV with "earthmine" printed on the side stopped at the corner of Elizabeth and Douglass and the guy got out to adjust whatever bit of equipment was on the roof. As I remember it, the logo is the same as www.earthmine.com but that site doesn't have anything useful on it (other than a local whois address). I know many people have seen the street view cameras on top of cars for Google Maps, has anyone else seen this vehicle?