I saw one on 23rd June (last friday) at approx 14:15 - 14:30 leaving Castle trading estate in Portchester, Near fareham and headng towards Portsmouth along A27 past Port Solent, North harbour area.
Its probably unlikely to be anyone on here if you look
on this page you will see the A2 Owners club statistics
and as you can see there is no one with a Polar White car ....