I just saw it on the road today. Didn't managed to catch any picture but did a search on one motoring. Guess it might be use to catching speeding offenders. Runs on Diesel as well !
Vehicle No.: QX798D
Vehicle Type: E18 - Road Tax Exempted Company Car (Single Rate)
Vehicle Attachment 1: No Attachment
Vehicle Scheme: Marked (Government)
Vehicle Make: HYUNDAI
Vehicle Model: SONATA NF 2.0 CRDI AT ABS 2WD 4DR TURBO
Chassis No.: KMHET41VMCA813775
Engine No.: D4EAB977397
Engine Capacity: 1991 cc
Maximum Laden Weight: 2150 kg
Unladen Weight: 1685 kg
Year Of Manufacture: 2011
Original Registration Date: 29 Jul 2011
Lifespan Expiry Date: -
PARF Eligibility Expiry Date: 28 Jul 2021
Inspection Due Date: 28 Jul 2014