Here's another picture found here :
http://www5a.biglobe.ne.jp/~cloud/talkSVX4.htm
this thread is about the second car shown on that page, not the purple car.
Google translated text :
"Pace car of ('s SKC* test course.) - Subaru experimental research center.
The shooting of the November 7, 99 "SKC10 anniversary event" (generally open date).
On that day, well as some other leading successive Subaru car parade of rabbit scooter ~ SVX
Security, and (also some adults) children were taken, such as a big success. (Laughs)
I look at HP Asano's "The Land of Promise" the (Link) for more information.
Populations of certain SVX club was invited to the rear. (Laughs)
I have also posted in the "Photgraph" photos at that time."
* Subaru Kenkyo Center.. Subaru experimental research center.
Interesting that it's a LHD car, apparently used in Japan. But I guess if USA was the intended market then it makes sense to test with LHD.
Thanks to Daniel for finding this for me.